For the past month or so I've been sleeping on an aerobed raised premier air mattress. Here's a pic without my sheets or blanket, and it is most excellent. It's quite expensive, but I had great coupons and wanted to stay portable, as I'm planning on moving back to San Fran in August when my lease terminates. Anyhow, it will make an excellent guest bed someday. At the head of the bed there's a remote control that lets you stiffen or soften the bed, which takes 2-3 minutes to inflate from zero. It comes with a duffle bag for transport too! (shameless plug) Anyhow, after a month with no back pain, I can throw away my receipt!