I like Avid BB7 cable discs the best. I have used Shimano Deore hydraulic brakes and I had problems with the rear brake blowing seals during winter riding. Had them rebuild and the same problem again, seals would leak during very cold weather. We get a lot of road salt around here and I think that's one of the things that kept corroding the seals, the rear brake gets most of the road salt on it., front not so much...So now I have cable discs on 2 of my bikes, never had any problems with them yet.