When I started my research on TP, I found this site:
http://garysaid.com/my-new-tempurpedic-bed/
It's been going since late 2004 and has hundreds of post but is very informative on all models, problems, benefits, from actual users. It will take you at least two days to read through every post, but I suggest you enter "Celebrity" in the find function of your browser to help you weed through the posts. There is a lot of information including my own current problems with the Cloud Supreme.
Hope it's okay to post the link here, and hope it helps you

Natalie
This message was modified Feb 6, 2010 by Natalia