I recently snapped a hydraulic brake line out on the trail, and am considering going to mechanical disc brakes to eliminate this sort of hassel. I currently have Magura Claras on the bike, and while I know they have received bad reviews, they've been OK. I am considering putting on a used set of Avid BB7s. Does this change make sense? I don't have a ton of money right now, so high end hydraulics are probably out of the question. Any suggestions? Thanks.