Almost bought a mattress last year, then we ended up spending our extra money to take the kids to Florida.  I was looking into a bed in a box.  They had some great reviews and about 1/3rd the cost of the temperpedic.  I think you are stuck with it for 90 days before they let you return it if you don't like it.  You have to send it back as they only do online, and they make you keep it 90 days so you have time to adjust before deciding if you want to keep it or not.  Here's a site to look into for reviews. www.sleeplikethedead.com