I'm building a 29er from scratch for commuting. Would a cheap suspension fork be worth the extra 2.5 pounds of weight or should I just get a rigid fork? They're roughly the same price. As a 29er, it should ride more smoothly than a mountain bike anyway and I intend to put a 2.35" Schwalbe Big Apple at least on the front, which should add some comfort as well. Would a suspension fork be overkill? The roads I ride are pretty rough, though. 1-2" deep potholes aren't uncommon and traffic doesn't always let me avoid them.