I love this one: Sleep Innovations Shiloh 12-inch Memory Foam Mattress I've had others staying in our guest bedroom love it too and go out and buy one. At thi

I love this one: Sleep Innovations Shiloh 12-inch Memory Foam Mattress I've had others staying in our guest bedroom love it too and go out and buy one. At this point, with a number of moves and growing family, I've bought something like 5-6 of them. I think Costco sells the same mattress under Novaflex or a similar name but at a slightly higher price point (the Amazon price varies quite a bit on the Sleep Innovations mattresses -- check CamelCamelCamel on it if curious).