Side-by-side mattress testing · 144+ comparisons published
Updated September 2026
Category
Serta Perfect Sleeper X Quilted Hybrid Level Two
Casper Snow Hybrid
Comfort
Not lab tested
Not lab tested
Support
Not lab tested
Not lab tested
Cooling
Not lab tested
Not lab tested
Edge Support
Not lab tested
Not lab tested
Motion Isolation
Not lab tested
Not lab tested
Durability
Not lab tested
Not lab tested
Value
8.2/10
8.5/10
Blank cells mean that model has not completed our instrumented lab protocol, so we publish no measured score for it. We never estimate a number we have not recorded.
Quick Specs Comparison
Spec
Serta Perfect Sleeper X Quilted Hybrid Level Two
Casper Snow Hybrid
Price (Queen)
$1,799
$1,904
Type
Hybrid
Hybrid
Firmness
5.5/10
5.5/10
Height
Varies by comfort level
12 inches
Trial
120 nights
100 nights
Warranty
10 years
10 years
Shipping
Free shipping
Free shipping & returns
Key Advantages
Why Choose Serta Perfect Sleeper X Quilted Hybrid Level Two
- Micro coil layer adds pressure relief and responsiveness
- Extra memory foam over Level One
- Five comfort zones on a zoned Q4 coil base
Why Choose Casper Snow Hybrid
- The coolest-sleeping mattress Casper builds
- Cool-to-the-touch QuickCool cover
- Conforming memory foam feel without heat trap