Hi - we have a mattress that is failing - we originally thought it was going to be good, however, I wake up horribly sore, and go to sleep feeling like I'm in a valley or hole! There is actually a visible indent in the middle regardless if we flip it! We've been looking at a new mattress set. I'm wondering if anyone has any make that they absolutely love? We were looking at the Tempurpedic memory foam mattresses, and although they felt neat laying on them, I don't know how they would be for my back over the long term. I would love to hear any ideas/experiences/recommendations anyone has had on mattress types! Thanks!