What is the difference between a Simmons BeautyRest: Carao, Oakdale, and Vanderbilt mattress?
I have already went to the website and looked at the differences and don’t know much about the materials that it lists. I am wanting to purchase a Simmons mattress but I can’t figure out why some of these beds have a 500 dollar difference.

Another option is to avoid the "name game" marketing exploitation and configure your own . . research links:
http://mattress.talkspot.com/aspx/templates/blank.aspx?msgid=0