I have a 2010 Felt Q620. I am very happy with the bike as a whole for what I initially paid for it (400 euro). The frame seems to be very good quality for the price (it is the same as they use all the way up to the Q920, and has a fairly beefy headtube, top tube, down tube joining). That said, I bought the Felt as an introduction to the sport not knowing how much riding I would do. Over 3,000km and less than a year later only the frame, seat post, handle bars, front wheel, and brakes (it came with hydraulic Tektro Auriga comps) are the same. Knowing what I know now I would have been better off getting a better bike to start with, but I didn't know. Anyways, the Q620 has been a great introduction into the sport, and even though I have dropped quite a bit of cash into it, it continues to be a great investment (many, many hours of fun and I'm almost as healthy as when I played soccer for 14 years).
My plans for the future will be to swap everything off of it onto a Ragley Blue Pig. Everything will swap perfectly as the seat tube, head tube, bb, etc are all compatible sizes. My main reason for this is that I probably bought a size too big for the kind of riding I like to do, and the aluminum has got to be starting to fatigue a bit. I'll probably wait for it to break, but the AM geo of Blue Pigs sure sounds fun..
I would recommend maybe going up to the Q620. If I remember right, and they are both still similarly specced, it is quite a bit more bike for the money than the Q520. Whatever you do, have fun!
Last edited by ShimmerFade; 02-05-12 at 03:08 AM.