i have a sleep number bed, slept on it for yrs. it's in the spare bedroom now. the foam along the side goes to pot within a couple yrs. otherwise, very comfortable. but loved a serta we had, and love top of the line firm, non pillow top from a furniture store. no pillow top for me. hate them. going to go look for a new one soon. so glad to see that other people look for non pillow tops also. i thought i was in the minority.