My 2009 Curve SL has been remarkably trouble free in the 4+ years I`ve had it. Needed new tires, new brake cables, and new shim for seatpost this year - but that`s all. Every 6 months or so the frame hinge needs to be tightened and re-greased otherwise it will creak, after that it`s whisper quiet. The Capreo has been a flawless performer and almost never needs adjustment - pretty amazing actually, considering how much use this bike gets.