I went the least expensive route (usually don't attempt this) and purchased a Spa Sensations 8" Memory Foam mattress. I *LOVE* it. Very comfortable. Not too soft, but just right. I've been having terrible pains in my shoulders and elbows for a while now. As most of us probably do, I chalked it up to being a result of my many years in a wheelchair. I've been sleeping on it for almost two weeks and lo and behold my elbow and shoulder pains are almost gone. I wish I would have done this earlier. I went from a King to a Queen. Still trying to get used to that.