# Nolah Evolution 15 (Firm) vs Plank Firm Luxe: Firmness, Price, and Construction Compared

Canonical: https://squishmat.com/compare/nolah-evolution-15-firm-vs-plank-firm-luxe · Data refreshed 2026-09-04 · Source: SquishMat

The Nolah Evolution 15 (Firm) is $118 cheaper in a queen; the table below shows what the price gap buys.

## Full spec table

| Spec | Nolah Evolution 15 (Firm) | Plank Firm Luxe |
| --- | --- | --- |
| Type | Hybrid | Hybrid |
| Firmness | 8/10 | 8/10 |
| Height | 15" | 12.25" |
| Queen price | $1,480 | $1,598 |
| Price range (all sizes) | $1,047–$1,654 | $1,065–$1,865 |
| Foam densities (lb/ft³, top → bottom) | 1.6 / 1.8 / 1.5 / 1.5 / 1.5 / 1.5 | 1.5 / 2.5 / 1.8 / 1.8 / 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 | 8/10 |
| 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 | Flippable firm and extra-firm sides, Coil core for durability, Quilted firm sleeping surface, Favorite for stomach sleepers |
| Spec source | NapLab | NapLab |

## Key differences

- The Nolah Evolution 15 (Firm) is $118 cheaper in a queen ($1,480 vs $1,598 as of 2026-09-04) than the Plank Firm Luxe.

## Who each mattress is for

**Nolah Evolution 15 (Firm):** The Nolah Evolution 15 (Firm) has a firm feel suited to stomach sleepers and heavier sleepers who need to keep their hips lifted. Strengths: Excellent pressure relief at the shoulders and hips; Strong, even support that keeps the spine aligned; Sturdy edges that make the full surface usable.

**Plank Firm Luxe:** The Plank Firm Luxe has a firm feel suited to stomach sleepers and heavier sleepers who need to keep their hips lifted. Strengths: Excellent pressure relief at the shoulders and hips; Strong, even support that keeps the spine aligned.

## FAQ

### Which is firmer, the Nolah Evolution 15 (Firm) or the Plank Firm Luxe?

They rate the same: both are a 8/10 on the firmness scale, a firm feel suited to stomach sleepers and heavier sleepers who need to keep their hips lifted.

### Which is cheaper, the Nolah Evolution 15 (Firm) or the Plank Firm Luxe?

The Nolah Evolution 15 (Firm) is cheaper in a queen: $1,480 versus $1,598, as of 2026-09-04.

### What is the main construction difference between the Nolah Evolution 15 (Firm) and the Plank Firm Luxe?

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.

## More

- [Nolah Evolution 15 (Firm) — full specs](https://squishmat.com/mattresses/nolah-evolution-15-firm)
- [Plank Firm Luxe — full specs](https://squishmat.com/mattresses/plank-firm-luxe)
- [Comparison matrix: every mattress we track](https://squishmat.com/compare)

Free to cite with attribution — link to the canonical page. Where a datapoint traces to a third-party teardown, please credit the original measurer too (sources are cited per bed on https://squishmat.com/mattress-database).