I have a Rocky Mountain Metro Hybrid that I take off roding on hilly trails. It is a little prone to getting flats and the brakes don't work great in the mud but other than that no problems. I paid a little under $600 for it. The sales guys advice was take it on trails but don't hit big rocks, drive it off curbs but don't try to hop up curbs. I have followed that advice and the bike has held up just fine. I would recommend it if you want a city bike that can handle some trails.