I am trying to make the same decision myself! Looking at Cyclo-cross, hybrid and touring bikes for rough country roads and a commute that could be up to 21 miles on-way. I want a good strong bike that will last with heavy mileage but I also don't want it to be so heavy it takes me forever to get where I am going. I don't want to spend tooooo much either. I'll definately being watching this thread! Thanks for posting the ques.