I slept on a 20 dollar inflatable mattress for a year in grad school -- on a box spring. Most comfortable sleep I had until I bought the tempurpedic last year. The Celebrity bed. Awesome.
Definately try out the Sealy memory foam, CVA. They carry just about the same guarantee and are considerably cheaper (well, less expensive). They also tend to run softer than the tempurpedic.
Looking forward to sleeping in a real bed again.
BD
My latest
Me: 36 W: 35 2 D: 9 and 5 T: 16 years M: 12 10/4/06: Bomb 10/5/06: Ended A 4/22/07: ILYBNILWY