Well alanarmo - you've heard what people've said. Ours was even more than fluffyfeet's - and the reason I'm telling you that, is because there are varying degrees of memory foam quality, which, from what I've heard, can really make a difference, but also the make of it counts as well. I've known people buy mattresses which are basically just mattress toppers, but they've still found them to be good.
These mattresses are beautiful, and although some people report them making you sweat, ours doesn't. Any moisture is drawn downwards, and I can honestly say that since buying it, I've never had such a comfortable night's sleep.
I hope you find the same with yours.