I bought a king size Dr. Breus bed last November and it's the greatest thing I've ever spent money on. We thought the TempurPedics were too squishy and we wanted something firmer. The Dr. Breus bed (it's made out of latex foam) has that same sort of Tempur Pedic "squish", but it's more firm. It doesn't sleep hot at all and it was cheaper than a Tempur Pedic (the king with good springs was about $3500).
http://www.thesleepdoctor.com/the-dr...bed/index.html
Also, when you are bed shopping, get the bed you want. Forget price - if you get good sleep your life will improve drastically and a good mattress should last for a LONG time.