I have a cyclocross as my main bike (with 2nd wheel set of slicks) and a bike I am not afraid to have stolen an older used bike. The cross pretty much covers all types of riding that I do, though I have seriously cosidered getting a third, a light road racer, and had even put money down at a bike shop on one. Backed out a week later because I just didn't want to be cash tight for the next few months and it was a pretty impulsive move I had only test rode that one bike and not slept on the decision. I must have had new bike fever, bad that day. Still debating if I really need to have a 3rd bike when I am completly satisfied with my main bike.