Nolah Evolution 15 (Firm) vs Plank Firm Luxe (Extra Firm)
They're priced closely — the real difference is feel: the Plank Firm Luxe (Extra Firm) is the firmer of the two. Every number below comes from published teardowns and spec sheets (see our methodology); prices are queen-size, refreshed 2026-10-02.
Nolah Evolution 15 (Firm) vs Plank Firm Luxe (Extra Firm): full spec table
| Spec | Nolah Evolution 15 (Firm) | Plank Firm Luxe (Extra Firm) |
|---|---|---|
| Type | Hybrid | Hybrid |
| Firmness | 8/10 | 9/10 |
| Height | 15" | 12.25" |
| Queen price | $1,594 | $1,598 |
| Price range (all sizes) | $1,127–$1,781 | $1,065–$1,865 |
| Foam densities (lb/ft³, top → bottom) | 1.6 / 1.8 / 1.5 / 1.5 / 1.5 / 1.5 | 1.5 / 1.8 / 1.8 / 2.5 / 1.5 |
| Coil gauge | 13.5 | — |
| Coil count (queen) | — | — |
| Cooling | 6/10 | 6/10 |
| Motion isolation | 6/10 | 6/10 |
| Edge support | 8/10 | 7/10 |
| Pressure relief | 9/10 | 7/10 |
| Support | 8/10 | 8/10 |
| Natural materials | 4/10 | 2/10 |
| Notable features | 15-inch luxury hybrid build, Nolah AirFoam pressure relief, Zoned HDMax support coils, Reinforced edge support | Extra-firm side of the flippable Plank Luxe, Coil core for durability under heavy loads, Quilted cover directly over the firm support foam, Built for stomach sleepers and very heavy bodies |
| Spec source | NapLab | NapLab |
Key differences
- The Plank Firm Luxe (Extra Firm) is a step firmer (9/10 vs 8/10), so it suits sleepers who want a bit more pushback.
Who the Nolah Evolution 15 (Firm) is for
The Nolah Evolution 15 (Firm) has a firm feel suited to stomach sleepers and heavier sleepers who need to keep their hips lifted.
- Excellent pressure relief at the shoulders and hips
- Strong, even support that keeps the spine aligned
- Sturdy edges that make the full surface usable
Who the Plank Firm Luxe (Extra Firm) is for
The Plank Firm Luxe (Extra Firm) has a firm feel suited to stomach sleepers and heavier sleepers who need to keep their hips lifted.
- Strong, even support that keeps the spine aligned
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Frequently asked questions
Which is firmer, the Nolah Evolution 15 (Firm) or the Plank Firm Luxe (Extra Firm)?
The Plank Firm Luxe (Extra Firm) is firmer at 9/10 versus 8/10 for the Nolah Evolution 15 (Firm).
Which is cheaper, the Nolah Evolution 15 (Firm) or the Plank Firm Luxe (Extra Firm)?
The Nolah Evolution 15 (Firm) is cheaper in a queen: $1,594 versus $1,598, as of 2026-10-02.
What is the main construction difference between the Nolah Evolution 15 (Firm) and the Plank Firm Luxe (Extra Firm)?
Both are hybrid builds with similar published specs — the differences come down to feel and price rather than construction. The full layer-by-layer comparison is in the table above.
See how both stack up against every bed we track in the full comparison matrix, or dig into the complete specs for the Nolah Evolution 15 (Firm) and the Plank Firm Luxe (Extra Firm).