So the fiance and I need a bed in the new apartment, and we're considering a Tempurpedic. Anyone have one or slept on one? What about those sleep number doohickeys? Thoughts/comparisons to other beds? Should we just pick one up from Ikea and be done with it?

It looks like a regular 12" mattress but it feels more like plywood with a few layers of fabric on it. It has a tiny bit more give than plywood but seriously not too much.