Regarding hydro's...I have seen broken lines TWICE...once on the Mr. Toads downhill ride in Lake Tahoe and the other in the Foresthill area, near Auburn. One rider caught a branch and ripped the hydro hose right out of the reservour, the other rock crashed and damaged the connection at the rear caliper, leaking like a garden hose. Me likes cable as stated earlier, fixable on the trail. Yep, love the Avid BB-5's.