Side-by-side mattress testing · 144+ comparisons published
Updated September 2026
Category
Serta iSeries NXG 1500 Hybrid Firm
Charles P. Rogers Powercore Estate 5000
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
9.2/10
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
Serta iSeries NXG 1500 Hybrid Firm
Charles P. Rogers Powercore Estate 5000
Price (Queen)
$1,899
$1,499
Type
Hybrid
Hybrid
Firmness
7.5/10
7/10
Height
Varies by comfort level
12+ inches (Plush 13+ inches)
Trial
120 nights
Trial and return terms vary by promotion — confirm at checkout
Warranty
10 years
20-year warranty
Shipping
Free shipping
Free shipping in the contiguous US, made to order in the brand's own factory
Key Advantages
Why Choose Serta iSeries NXG 1500 Hybrid Firm
- Firm, supportive feel that suits back and stomach sleepers
- CoolFeel cover plus carbon fiber foam for heat management
- Q4 zoned coil unit distributes weight evenly
Why Choose Charles P. Rogers Powercore Estate 5000
- Gold Certified natural Talalay latex comfort layer — the higher-grade latex process, not a synthetic blend
- Active Powercore 2 dual-stage spring unit gives progressive support that adapts to body weight
- Factory-direct from a 170-year-old US manufacturer with no retailer markup