Mattress testers Becky George and Nicola Appleton sit on the Plank Firm Luxe mattress on a bed frame in the Tom's Guide sleep studio. I've slept on some of the best mattresses for every sleep style, but firm beds are always my winner. It's no wonder I was full or praise in my Plank Firm mattress review, as extra firm support was the stand-out feature. So far, the Plank Firm Luxe lives up to its predecessor and adds a bouncy, luxury finish. I'll be writing a full review shortly.