Tammy-I have an all-foam Mattress called Body Zone. It also goes by other names, depending on what retailer is selling it. I used to work for the company that makes them, and we retailed them out to WalMart, Linens & Things, Bed Bath & Beyond, Target, etc. Each one of them called it something else.
In a nutshell, the actual mattress is ALL FOAM, no springs or anything else. The foam is called Visco Foam. It also came with a memory foam topper and 2 all-foam pillows (are you seeing a theme here? LOL). It's AWESOME! And not all that expensive. It came in a box, believe it or not, that fits into your shopping cart and your car. You buy it, get it home, cut open the package and the vaccuum-sealed mattress and topper 'fill out'.
I recommend it. The only problem I've experienced with it is that it's hot...foam retains body heat, but I just fix that by sleeping with less blankets.
HTH
Gayle