Buy a sleep number bed. You will waste time and money on your mattress purchase. I bought a brand name king at Costco. I found myself sleeping in a hole in the memory foam after a few months on it. After turning it, my wife would complain that she was sinking into my hole, and I was enlarging hers.(

). In the end I returned my mattress to costco, bought a 14 inch memory foam bed on Overstock.com. It was great for about 2 weeks until it softened up too much. After 6 months I was waking up hot and trying to roll out of this hole I created. And you couldn't flip that one either. Sold it cheap on Craigslist and spent the $$ on a sleep number bed. Never looked back and love it .. and my wife does too. But don't get the deluxe ones with the thick toppers.. just get the cheap one and slip your own foam topper inside. That way you can turn and flip it at your leisure and replace it after it wears down.