Northern Mattress & Furniture 1st is a Maine retailer carrying two Serta iComfort foams and two Beautyrest World Class hybrids. In our testing, the iComfort beds did the best job with quiet, pressure-relieving memory-foam comfort, while the Beautyrest hybrids felt steadier, cooler, and easier to move on. The biggest split was feel: the Aveda Plush gave us the deepest cradle, while the Level 4 Firm kept sleepers lifted.
Table of Contents
Product Overview
| Mattress | Overall Score | Pros | Cons | Ideal For |
|---|---|---|---|---|
| Serta iComfort Aveda Medium | 3.9/5 | Strong motion control, balanced contour | Slow response, soft edges | memory-foam fans |
| Serta iComfort Aveda Plush | 3.8/5 | Deep pressure relief, very quiet | Can feel sinky, weak edges | Side sleepers |
| Beautyrest World Class Hybrid Level 4 Firm | 4.2/5 | Robust support, cooler feel, sturdy edges | Firm for many side sleepers | Back sleepers, stomach sleepers, heavier bodies |
| Beautyrest World Class Hybrid Level 4 Plush | 4.1/5 | Plush comfort with lift | Not as quiet as foam | Couples, combo sleepers |
Final Verdict
Serta iComfort Aveda Medium: Best for motion-sensitive back/side combo sleepers who want a medium foam contour. Skip it if you need stronger edges, faster rebound, or cooler sleep.
Serta iComfort Aveda Plush: Best for side sleepers who want deeper pressure relief and a quieter bed. Skip it if you sleep on your stomach, carry more body weight, or turn a lot.
Beautyrest World Class Hybrid Level 4 Firm: Best for back and stomach sleepers who want lift, edge strength, and easier movement. Skip it if your shoulders need a softer landing.
Beautyrest World Class Hybrid Level 4 Plush: Best for couples and combo sleepers who want cushion without the slow sink of all-foam plush. Skip it if you want a flatter, firmer feel.
Northern Mattress Comparison Chart
| Spec / Test Result | Serta iComfort Aveda Medium | Serta iComfort Aveda Plush | Beautyrest World Class Hybrid Level 4 Firm | Beautyrest World Class Hybrid Level 4 Plush |
|---|---|---|---|---|
| Type | Memory foam | Memory foam | Hybrid | Hybrid |
| Feel | Medium | Plush | Firm | Plush |
| Thickness | 12" | 12" | 13.5" | 13.5" |
| Available sizes | Twin XL, Full, Queen, King, Cal King | Twin XL, Full, Queen, King, Cal King | Twin, Twin XL, Full, Queen, King, Cal King | Twin, Twin XL, Full, Queen, King, Cal King |
| Cooling design | Cool-touch fabric + graphite foam | Cool-touch fabric + graphite foam | InfiniCool surface + breathable fibers | InfiniCool surface + breathable fibers |
| Support design | 5 support zones | 5 support zones | 1000-density pocketed coils | 1000-density pocketed coils |
| Pressure relief in our testing | Medium contour, stable midsection | Deeper contour at shoulders and hips | Flatter, lifted feel | Plush cushion with coil pushback |
| Motion isolation in our testing | Very high | Very high | High | High |
| Responsiveness in our testing | Low-medium | Low | High | Medium-high |
| Edge support in our testing | Fair | Fair | Very good | Very good |
How We Tested It
We used the same routine we use when we test mattresses: sleep rotations, notes after wakeups, and repeat checks for support, cooling, pressure relief, motion isolation, responsiveness, edge support, durability, and firmness. We scored alignment, heat buildup, shoulder and hip comfort, partner movement, turning effort, edge sitting, and how each surface settled over repeated use.
Northern Mattress: Our Testing Experience
These four models split cleanly between all-foam contour and coil-backed lift. I rotated nights with Marcus, while Jenna and Ethan handled most of the partner-motion checks. Dr. Adrian Walker reviewed our notes and pushed us to describe exactly where support showed up or faded.
Serta iComfort Aveda Medium
Our Testing Experience
On the Aveda Medium, the foam eased me in instead of dropping me fast. In our testing, my hips settled just enough to keep my lower back from feeling jammed, and side sleeping felt better supported through the middle than I expected from an all-foam bed. Marcus liked that steadier midsection, but he also noticed the same two drawbacks every night: warmth built up after long still stretches, and the edge felt soft when he sat down. Jenna and Ethan both called it the quietest surface for partner movement.
What we liked
- Steady zoned support
- Strong motion control
- Comfortable medium contour
Who it is best for
- Back/side combo sleepers
- Couples who wake easily
- Anyone who wants foam without going plush
Where it falls short
- Soft sitting edge
- Slower turns
- More warmth over time
Pros & Cons
| Pros | Cons |
|---|---|
| Strong motion isolation | Slow response |
| Balanced contouring | Soft edges |
| Zoned support feel | Heat buildup over time |
Details
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Comfort level: Medium
-
Mattress type: Memory foam
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Thickness: 12"
-
Support: 5 support zones
-
Cooling: cool-touch fabric + graphite-infused foam
Review Score
| Metric | Score | Remarks |
|---|---|---|
| Support | 4.2/5 | Held hips in line. |
| Cooling | 3.8/5 | Starts cool, warms later. |
| Pressure Relief | 4.4/5 | Good shoulder and hip give. |
| Motion Isolation | 4.6/5 | Partner movement stayed muted. |
| Responsiveness | 3.3/5 | Turns take extra effort. |
| Edge Support | 3.2/5 | Soft when sitting. |
| Durability | 4.0/5 | Minor settling in testing. |
| Overall | 3.9/5 | Best quiet medium foam. |
Serta iComfort Aveda Plush
Our Testing Experience
The Aveda Plush leaned deeper right away. My shoulders sank faster, and our side-sleep sessions felt easier on pressure points than the Medium. Jenna could stay on her outer shoulder longer without that pinched feeling. The trade-off showed up whenever Ethan had to turn quickly: the foam stayed calm and quiet once settled, but it grabbed a bit during rotation. Marcus also found the plush build too forgiving on his stomach, with more hip dip than he wanted.
What we liked
- Deep shoulder and hip relief
- Very low motion transfer
- Quiet surface
Who it is best for
- Dedicated side sleepers
- Lighter-to-average bodies
- Couples who want minimal disturbance
Where it falls short
- Too much sink for stomach sleeping
- Turns can feel sticky
- Edge sitting is weak
Pros & Cons
| Pros | Cons |
|---|---|
| Deep pressure relief | Can feel sinky |
| Very quiet surface | Turning can feel sticky |
| Excellent motion isolation | Edge support is limited |
Details
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Comfort level: Plush
-
Mattress type: Memory foam
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Thickness: 12"
-
Support: 5 support zones
-
Cooling: cool-touch fabric + graphite-infused foam
Review Score
| Metric | Score | Remarks |
|---|---|---|
| Support | 3.6/5 | Best on the side, softer elsewhere. |
| Cooling | 3.6/5 | Cooling help, but still warmer. |
| Pressure Relief | 4.7/5 | Best relief of the four. |
| Motion Isolation | 4.7/5 | Movement stayed highly muted. |
| Responsiveness | 3.0/5 | Slow to recover. |
| Edge Support | 3.0/5 | Usable, not confident. |
| Durability | 3.8/5 | More compression risk. |
| Overall | 3.8/5 | Best deep, quiet plush. |
Beautyrest World Class Hybrid Level 4 Firm
Our Testing Experience
The Level 4 Firm felt completely different from the first sit. The edge stayed upright, turning took almost no effort, and Marcus got the flattest hip support of the group. In our cooling checks, it also held less heat than the two Sertas. The trade-off was pressure at the shoulder. During longer side-sleep sessions, I wanted more give at the joint, even though the bed stayed stable everywhere else. Jenna and Ethan noticed more movement transfer than on the all-foam models, but still less than on a typical spring bed.
What we liked
- Strongest hip and lumbar lift
- Easy repositioning
- Sturdy edges
Who it is best for
- Back sleepers
- Stomach sleepers
- Heavier bodies needing support
Where it falls short
- Firm side-sleep feel
- More bounce than foam
- Less body-hug
Pros & Cons
| Pros | Cons |
|---|---|
| Strong support and stability | Too firm for many side sleepers |
| Very good edge support | More motion than all-foam |
| Easier turning | Less hug contour |
Details
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Comfort level: Firm
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Mattress type: Hybrid
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Thickness: 13.5"
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Support: 1000-density pocketed coils
-
Cooling: InfiniCool surface + breathable fibers
Review Score
| Metric | Score | Remarks |
|---|---|---|
| Support | 4.6/5 | Strongest lift of four. |
| Cooling | 4.3/5 | Stayed cooler than foam. |
| Pressure Relief | 3.7/5 | Shoulders wanted more give. |
| Motion Isolation | 4.0/5 | Good for a hybrid. |
| Responsiveness | 4.2/5 | Very easy to turn. |
| Edge Support | 4.4/5 | Stable at the perimeter. |
| Durability | 4.3/5 | Shape held well. |
| Overall | 4.2/5 | Best for support first. |
Beautyrest World Class Hybrid Level 4 Plush
Our Testing Experience
The Level 4 Plush landed in the middle of the group in the best way. It gave me more shoulder cushion than the Firm, but the coil system still kept my hips from dropping the way the Aveda Plush did. Jenna and Ethan liked it most for shared sleep because it stayed relatively calm without making turns feel slow. Marcus still preferred the Firm for stomach sleeping, but even he thought this one kept more lift than most plush beds. It was the easiest model to recommend when two sleepers wanted different things from the same mattress.
What we liked
- Plush comfort with pushback
- Strong edges for a plush build
- Better couple balance than most soft beds
Who it is best for
- Couples
- Combo sleepers
- Side/back sleepers who want cushion without deep sink
Where it falls short
- Not as quiet as foam
- Not flat enough for strict stomach sleeping
- Taller profile
Pros & Cons
| Pros | Cons |
|---|---|
| Plush comfort with support | Not as motion-dead as foam |
| Strong edges for couples | Too soft for strict stomach sleepers |
| Easier turning than all-foam plush | Bulkier profile |
Details
-
Comfort level: Plush
-
Mattress type: Hybrid
-
Thickness: 13.5"
-
Support: 1000-density pocketed coils
-
Cooling: InfiniCool surface + breathable fibers
Review Score
| Metric | Score | Remarks |
|---|---|---|
| Support | 4.0/5 | Balanced, not ultra-flat. |
| Cooling | 4.1/5 | Cooler than both Sertas. |
| Pressure Relief | 4.4/5 | Better cushion than Firm. |
| Motion Isolation | 4.3/5 | Calm for a hybrid. |
| Responsiveness | 3.8/5 | Easy turns, softer rebound. |
| Edge Support | 4.0/5 | Reliable outer-third use. |
| Durability | 4.1/5 | Minor break-in only. |
| Overall | 4.1/5 | Best balance for couples. |
Compare Performance Scores of These Mattresses
| Mattress | Overall (/5) | Support | Pressure Relief | Cooling | Motion Isolation | Durability | Responsiveness | Edge Support |
|---|---|---|---|---|---|---|---|---|
| Serta iComfort Aveda Medium | 3.9 | 4.2 | 4.4 | 3.8 | 4.6 | 4.0 | 3.3 | 3.2 |
| Serta iComfort Aveda Plush | 3.8 | 3.6 | 4.7 | 3.6 | 4.7 | 3.8 | 3.0 | 3.0 |
| Beautyrest World Class Hybrid Level 4 Firm | 4.2 | 4.6 | 3.7 | 4.3 | 4.0 | 4.3 | 4.2 | 4.4 |
| Beautyrest World Class Hybrid Level 4 Plush | 4.1 | 4.0 | 4.4 | 4.1 | 4.3 | 4.1 | 3.8 | 4.0 |
How to Choose a Northern Mattress
Start with sleep position and how often you turn. If you like a slower memory-foam hug, the iComfort models make more sense. If you change positions often or want easier movement, the hybrids feel more natural. Marcus also did better on the coil-based options, while sharper shoulder pressure usually favored the plusher surfaces.
Typical picks
- motion-sensitive couples: Beautyrest World Class Hybrid Level 4 Plush or iComfort Aveda Medium
- hot sleepers: Beautyrest World Class Hybrid Level 4 Firm
- side sleepers who want deep cushion: iComfort Aveda Plush
Limitations
| Mattress | Main limitations |
|---|---|
| Serta iComfort Aveda Medium | Soft sitting edge, slower turns, more warmth over time |
| Serta iComfort Aveda Plush | More sink for heavier bodies, sticky turns, weak edge support |
| Beautyrest World Class Hybrid Level 4 Firm | Shoulder pressure risk, more bounce, less contour |
| Beautyrest World Class Hybrid Level 4 Plush | Not foam-quiet, too plush for strict stomach sleepers, taller profile |
Northern Mattress Vs. Alternatives
These Northern Mattress picks cover a useful spread, but they are not the only route. If you want a broader comparison set, compare them with a few well-known online mattresses.
Alternatives
- Saatva Classic: springier lift
- Helix Midnight Luxe: softer side-sleeper focus
- TEMPUR-Adapt: denser foam contour
Pro Tips for Northern Mattress
- Bring your own pillow when you test in-store; pillow height can fake a support problem.
- Judge edge support both sitting and lying down. Those are not the same test.
- If you are between feels, choose based on your worst joint: shoulders usually want more give, while lower back and hips usually want more lift.
- If you share a bed, do a real partner drill: one person gets in and out twice while the other stays still.
FAQs
Which model felt the most couple-friendly at night?
The Beautyrest World Class Hybrid Level 4 Plush gave Jenna and Ethan the best mix of calm motion control and easy repositioning.
Which one isolated motion the best?
Both iComfort Aveda models muted movement the most, with the Plush edging out the Medium in repeated partner-turn tests.
If I sleep hot, which model is the safest bet?
The Beautyrest World Class Hybrid Level 4 Firm stayed the coolest in our routine, especially during long still periods.
Which model is easiest to turn on?
The Beautyrest World Class Hybrid Level 4 Firm was the most effortless for quick turns and overnight resets.
