Side-by-side mattress testing · 144+ comparisons published
Updated September 2026
Category
Amerisleep AS5
Serta Perfect Sleeper X Quilted Hybrid Level Two
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
8.3/10
8.2/10
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
Amerisleep AS5
Serta Perfect Sleeper X Quilted Hybrid Level Two
Price (Queen)
$1,699
$1,799
Type
Hybrid
Hybrid
Firmness
3/10
5.5/10
Height
14"
Varies by comfort level
Trial
100 nights
120 nights
Warranty
20 years
10 years
Shipping
Free shipping
Free shipping
Key Advantages
Why Choose Amerisleep AS5
- Cloud-like softness with exceptional pressure relief
- Active Flex layer adds buoyancy to prevent trapped feeling
- Outstanding motion isolation — best in the Amerisleep lineup
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