I'm pretty happy with the F2's, I'm on my second, my first one was stolen 2 months ago and I just replaced it the one in the bike checks thread a few weeks ago. The one that got stolen held up well, I'm a big guy and the only thing that I broke in the year I had it was that some of the rear wheel spokes came loose, but it got stolen before that could develop into a real problem. Also, the frame isn't full cromoly, which may be a problem, but I'm not super hard on the frame and I've got to wait until I'm through grad school to be able to make that investment. My only real qualms with the bike is that the pedals and barends are crap and will be replaced if I get some good christmas presents