So far I'm a just a one-bike guy. I love the bike, takes me just about anywhere I want to go. However, a couple weeks ago while riding through a local Metropark I noticed the signs for the mountain bike trails and instantly got an itch to check them out, but knew my bike wouldn't be able to handle them. I've been monitoring Craigslist since, hoping to find a bargain. After that though, I can't imagine wanting another bike, but then again I never know what will pique my interest next.