We bought an Angel bed i think five years ago. It was great at first, but within a few months it started to remember where we slept and had slight body impressions. We figured this was normal so we kept it and didn't really think about it. Then after about 2 years we really noticed the sagging where we slept. They were like two or three inches deep, and the pillow top material inside was bunching up and it felt like you were sleeping on a towel.
A few weeks ago we could not longer take it anymore. We went out and bought the Temper pedic cloud bed. It feels amazing. I told the sales person what was happening to our angel bed and she said it wasn't normal, and that the temper pedic will not do that. She also said she had heard of the angel bed doing the same thing from a different person a few years back.
I hope my loss with this crappy bed helps save someone from making the mistake i made. Do not by a bed from angelbeds.com. While they are very nice on the phone, and shipping was kind of quick, the beds simply are inferior.