I have a Cybex treadmill that I got second-hand and believe it or not they do break down! Well, not completely; the incline on mine is broken (and has been since I got it). I've had my father-in-law try to fix it and he can't figure it out (and he works on all sorts of different machines for a living). Other than that it works great! It's big, bulky and doesn't have all the bells and whistles but I get a pretty good workout just the way it is! I've had it and used it for almost 2 years just the way it is and haven't had any problems so far!