Side-by-side mattress testing · 144+ comparisons published
Updated May 2026
Category
Casper Original
Amerisleep AS3
Comfort
9/10
9/10
Support
8.8/10
9/10
Cooling
8.7/10
8.9/10
Edge Support
8.4/10
8.6/10
Motion Isolation
9.2/10
9.1/10
Durability
8.9/10
9/10
Value
8.8/10
9/10
Quick Specs Comparison
Spec
Casper Original
Amerisleep AS3
Price (Queen)
$995
$1,049
Type
All-Foam
Memory Foam
Firmness
5.5/10
5.5/10
Height
11 inches
12 inches
Trial
100 nights
100 nights
Warranty
10 years
20 years
Shipping
Free shipping & returns
Free shipping
Key Advantages
Why Choose Casper Original
- Well-balanced medium feel suits most sleepers
- Zoned support for spinal alignment
- Excellent motion isolation
Why Choose Amerisleep AS3
- Plant-based foam is more eco-friendly
- Balanced medium feel
- More responsive than traditional memory foam