Buy if: You want a true firm mattress that doesn’t cross the $1,000 threshold.
Skip if: You want a mattress with pocketed coils rather than just foam.
Why We Named It Best Overall
Along with its impressive firmness and value, we named the Plank Firm best overall because it tested well for back and stomach sleeping, ease of movement, edge support and motion isolation—all key categories that determine the quality of a firm bed.
How It Performed During Testing
Six different testers tried the Plank Firm Mattress; one tester who weighs over 150 pounds says, “I would describe this bed as dense and firm,” adding it’s “pretty enjoyable to lie on” in all sleep positions. And even some lightweight testers found the Plank Firm to be comfortable, like Alexandra Garrett, Forbes Vetted updates writer, who says, “I would rate this mattress a 9 [out of 10] for back sleeping. I felt lifted and supported. What was really nice was that I could feel bits of my lower spine decompress, which was especially nice since I struggle regularly with lower back pain.”
I also had a similar sentiment while back sleeping on the Plank Firm, and found it separated the space between my shoulders in a way that felt ultra relieving—like when you lie on the ground and your back cracks because your spine was pushed into alignment. However, Garrett warns it’s not comfortable for lightweight side sleepers, as it offers them “little to no pressure relief.” However, we recommend heavyweight sleepers consider upgrading to the Plank Firm Luxe, which is a touch more supportive thanks to its coil base.
