A big piece of the finding-the-right-mattress puzzle is knowing your own sleep style. The right mattress will depend on whether you’re a side, stomach, or back sleeper — or a mix of all three.
For side sleepers, the best mattress will contour to your body to keep your spine aligned. Plush is a good place to start.
For back sleepers, memory foam mattresses get rave reviews. Innerspring and hybrids bode well for those who prefer to sleep on their stomach. But in the end, what comfortable means is unique to you.