Has anyone tried one of these? Seem to get fairly good reviews, maybe a few negatives on firmness etc. I know they give 100 days to try it out and return it if I don't like it but I am a little reluctant. We had a hard enough time getting the super king size bed we have up our stairs as its exceptionally heavy and of course, large, and I am not keen to try and get it out. Although getting it out might be easier as I won't be so concerned with damaging it etc. Super king size £690 plus £30 gift card.