We have been searching for a GOOD mattress for almost a decade. It's a big decision and not one to be made lightly. Friends of ours (Barb and Charmagne) bought a T&N. They loved it but we waited a few months just to be sure. Eight months later they still love their T&N like the first day! Good enough for us. The sides do NOT break down. The top remains soft yet firm (does that make sense?). There are no low or high spots. Best decision we've made in years!!!!