We just bought a new mattress for our home. The old one was just and not nearly as comfortable as the one we have in our fiver. After a great deal of shopping around we settled on a Sealy Posturepedic Hybrid, which is wonderfully comfortable, and is also available for our fiver if we want one. I recommend that you get the dimensions for the mattress you need, including the thickness, and use that to shop for what you need. Buying a new mattress is alot like shopping for a used car. There are alot of sharks out there and it makes it hard to compare prices.