Okay, maybe I have been watching one too many infomercials, BUT, these things are really intriguing to me. I am really toying with buying a set, but, as they are NOT cheap, I have some concerns. They seem to make sense- molds to your body, no rocking, no metal coils- but, then, aren't I really sleeping on a giant sponge? LOL....

Anyone have one of these?? OR, know someone that has one? I want some real live testimonials!!!