Cardi’s Mattress Reviews (2026)

Prices were listed by Cardi’s at the time of review and can change during promotions.

Beautyrest Black Series One is the best choice if you want one mattress that handles almost everything well. Its pillow top cushions the shoulder, the coil unit keeps the hips level, and the perimeter stays noticeably steadier than the other three. It costs the most, but the added money buys a more composed, finished feel rather than one standout feature.

Serta Cobalt Calm is the value pick for shoppers who already know they like a traditional medium pillow top. It provides dependable back support and a comfortable surface without the Beautyrest price, though couples will notice more movement crossing the bed.

Purple Restore Firm is the easiest mattress to move on and the quickest to release stored heat. Choose it if you switch positions frequently and like a buoyant surface. Skip it if you want deep contouring or are easily distracted by bounce.

Casper One is the practical choice for motion-sensitive couples. It absorbs movement better than the three coil-based models and feels more responsive than many all-foam beds. Its weaker perimeter is the main compromise.

Each mattress spent 14 nights in the same bedroom on the same rigid foundation. A 5-foot-10, 185-pound tester who alternates between back and side sleeping handled the nightly comparisons. We used the same 5-point scoring method for support, cooling, pressure relief, motion isolation, responsiveness, edge support, and durability. The checks included spinal alignment, 44-pound compression, surface temperature after 30 minutes, three repeated 10-pound ball drops, rebound time, and seated edge compression.

Our testing experience

The Beautyrest settled into a medium feel—about 6.2 out of 10—without letting the midsection sag. On my back, my hips stayed level with my ribs; on my side, the pillow top made enough room for my shoulder without swallowing it. A 44-pound weight sank 1.8 inches at the center, which matched the controlled cushioning we felt overnight.

Temperature rose 3.1°F after 30 minutes, the smallest increase in the group. In the motion test, three 10-pound ball drops averaged 2.4 m/s² at the sensor, so movement was present but subdued for an innerspring. The edge compressed 2.1 inches during a 30-second seated check and never felt as if it were folding away. Those results explain why this mattress earned the most even scores rather than winning on only one trait.

What we liked

• The pillow top cushions shoulders and hips while the coil unit keeps the torso level.

• It built up less heat overnight than the other three mattresses.

• The perimeter stayed steady enough for sitting, getting dressed, and sleeping near the side.

Who it is best for

• Hot sleepers who still want noticeable cushioning

• Combination sleepers who need both pressure relief and easy movement

• People who sit or sleep close to the edge

Where it falls short

• It is the most expensive mattress in this comparison.

• Light sleepers may still notice a partner turning, even though motion control is good for coils.

Pros & cons

Details

• Listed price: $2,349–$4,698 before temporary promotions

• Type: Innerspring

• Top: Pillow top

• Height: 14.75 inches

• Sizes: Twin XL, Full, Queen, Split King, King, California King

• Warranty: 10-year limited warranty

Review score

Our testing experience

The Serta felt familiar from the first night: a cushioned top, a clear spring response, and support that became firmer through the middle. We rated the surface about 6.4 out of 10. The 44-pound weight sank 2.1 inches, slightly more than on Beautyrest, and the shoulder settled readily during side sleeping while the zoned center kept the hips from dropping too far.

Its trade-offs appeared in the motion and heat checks. The ball-drop test averaged 3.7 m/s² at the sensor, the highest reading here, and the surface gained 4.9°F after 30 minutes. It rebounded to 90% of its original height in 0.9 seconds, so turning never felt slow. Seated edge compression reached 2.5 inches—stable enough for everyday use, though not as composed as Beautyrest.

What we liked

• The medium pillow top offers immediate cushioning without a deep foam hug.

• Zoned center support keeps back sleeping steady without making the whole surface firm.

• The responsive coil feel makes rolling over and getting up easy.

Who it is best for

• Back and side sleepers who prefer a traditional mattress

• People who dislike the slow, close contour of dense memory foam

• Shoppers who want a pillow top at a midrange price

Where it falls short

• Partner movement travels farther across the surface than on Casper One.

• It retains more late-night warmth than Beautyrest or Purple.

Pros & cons

Details

• Listed price: $699.99–$1,498

• Type: Innerspring

• Top: Pillow top

• Height: About 14.5 inches

• Sizes: Twin, Twin XL, Full, Queen, Split King, King

• Warranty: 10-year limited warranty

Review score

Our testing experience

Purple Restore Firm felt unlike the other mattresses because the grid flexed only where weight was concentrated. At roughly 7.3 out of 10, it kept the torso high while allowing the shoulder to dip during side sleeping. The 44-pound weight sank 1.5 inches, the least in the group, yet the surface did not feel flat or rigid.

It returned to 90% of its original height in 0.4 seconds, which made turns feel almost immediate. Temperature rose 3.3°F after 30 minutes and returned to within 0.7°F of baseline five minutes after we stood up—the quickest heat release of the four. Bounce was the cost: ball drops averaged 3.2 m/s² at the sensor. The edge compressed 2.8 inches while seated, supportive but clearly softer than Beautyrest’s perimeter.

What we liked

• The grid and coils rebound quickly, so position changes take little effort.

• Heat dissipates quickly after the surface is unloaded.

• Pressure relief comes from localized flex rather than deep sink.

Who it is best for

• Combination sleepers who turn often

• People who want pressure relief without a slow foam hug

• Hot sleepers who prefer firmer support

Where it falls short

• The grid sensation takes time to get used to and will not appeal to everyone.

• Its bounce makes partner movement easier to feel than on Casper One.

Pros & cons

Details

• Listed price: $2,299–$4,598 before temporary promotions

• Type: GelFlex Grid hybrid

• Top: Tight top

• Height: 11.5 inches

• Sizes: Twin XL, Full, Queen, Split King, King, California King

• Warranty: 10-year limited warranty

Review score

Our testing experience

Casper One had a clean, medium-firm-to-firm foam feel, about 7.1 out of 10 in our room. The top layer eased into the body without holding us in place, and the 44-pound weight sank 1.9 inches at the center. Back sleeping felt the most natural; side sleepers who need deep shoulder cushioning may find it too restrained.

The motion result separated Casper from the group. Three ball drops averaged 1.6 m/s² at the sensor, and the vibration stopped sooner than on any coil model. It recovered to 90% of its height in 1.3 seconds—slower than Purple but quick enough that turns never felt sticky. Temperature rose 5.2°F after 30 minutes, and the seated edge compressed 3.2 inches, the most in the comparison.

What we liked

• It absorbed partner movement better than the three coil-based mattresses.

• The foam feels steady and supportive without a deep, slow hug.

• Position changes were easy for an all-foam bed.

Who it is best for

• Couples who wake easily when a partner moves

• Back and stomach sleepers who prefer firmer foam

• Guest rooms that need a simple, broadly comfortable mattress

Where it falls short

• The perimeter compresses more than the edges on the coil mattresses.

• It held the most heat in the 30-minute temperature check.

Pros & cons

Details

• Listed price: $874–$1,948 during the current retailer promotion

• Type: Memory foam

• Top: Tight top

• Height: 11 inches

• Sizes: Twin, Twin XL, Full, Queen, Split King, King, California King

• Warranty: 10-year limited warranty

Review score

Beautyrest earned the highest overall score because it had no major weakness. Purple tied Beautyrest on responsiveness but followed a very different path, using fast grid flex rather than a cushioned pillow top. Casper’s motion score makes it the better choice for light-sleeping couples, while Serta trades some motion control and cooling for a familiar feel at a lower starting price.

Start with your sleep position, then decide how much you value motion control, edge stability, and cooling. Beautyrest Black Series One is the safest premium choice for mixed positions and edge use. Purple Restore Firm fits people who change positions often. Casper One is the quietest option for couples. Serta Cobalt Calm is the best fit when you want a medium pillow top without moving into premium pricing.

All four mattresses land between medium and firm, so this group does not represent truly soft mattresses. The results also reflect one primary tester and two weeks on each model, not years of ownership. Purple’s buoyant grid is the least familiar surface, and Casper One is the weakest option for anyone who depends heavily on perimeter support.

Stearns & Foster Studio is the closest traditional alternative to Beautyrest Black Series One. Both use encased coils, premium foam, and reinforced edges, but the Studio Tight Top feels flatter and more responsive while the Studio Pillow Top is softer. Beautyrest remains the better fit if lower overnight heat buildup and a medium pillow-top feel matter more than a handcrafted luxury innerspring feel.

Sealy Posturepedic Spring with the pillow-top upgrade competes directly with Serta Cobalt Calm on price and familiar spring response. Sealy is the leaner, less feature-heavy option; Serta adds a three-zone coil layout and gel memory foam, giving the center of the bed a more defined support feel.

TEMPUR-Adapt Medium Hybrid sits near Purple Restore Firm in price but feels almost opposite. TEMPUR-Material contours slowly and cancels motion more effectively, while Purple’s grid rebounds immediately and releases heat faster. Choose Tempur-Pedic for a close, pressure-relieving embrace; choose Purple when ease of movement and airflow come first.

Tuft & Needle Original is the clearest alternative to Casper One among straightforward foam beds. Its proprietary foam has quicker bounce-back and less memory-foam contour, while Casper absorbs more movement and feels steadier under the torso. Both are easier to move on than dense, slow-response memory foam mattresses.

• Match firmness to your dominant sleep position. Stomach and many back sleepers usually need firmer support; side sleepers need more give at the shoulder and hip.

• If you share the bed, decide whether quiet motion or easy movement matters more. Casper favors motion control; Purple favors responsiveness.

• Use a stable foundation. Flexible or widely spaced support can make a mattress feel softer and weaken the edge.

• If lower-back discomfort increases overnight, prioritize a surface that keeps your hips closer to level with your ribs.

• If your shoulder feels sore while side sleeping, choose more surface cushioning rather than simply buying a softer bed.

Beautyrest Black Series One kept the hips and torso most consistently level, especially when alternating between back and side sleeping.

Casper One recorded the lowest movement at the sensor and stopped vibrating sooner than the three coil-based mattresses.

Purple Restore Firm rebounded fastest and required the least effort when moving from side to back.

Serta Cobalt Calm has the most familiar medium pillow-top feel, with immediate cushioning and a noticeable spring response underneath.