I bought a Bianchi Timberwolf (an entry-level mountain bike) back in 1994 to ride to class in grad school, but rarely used it after that. Last spring I had it tuned up for a 20-mile ride with some friends who talked me into it, and I've been hooked ever since. Instead of going to the gym for exercise, I've been bicycling about an hour every day, sometimes up to 2.5 hours on weekends, and I love it. The only problem is that my bike really wasn't designed for that kind of use. I'm lucky if I can average 15-16 mph during my rides, so I'm in the market for a new one that's better suited for my needs. Hopefully I'll get some advice in the forums.