I’ve only owned a couple bikes (so far) and only one of which had disc brakes. The original brakes were hydraulic (Promax). I had so many issues with them that I finally replaced them with mechanicals, 2011 BB7s. Like one of the previous posts said, hydraulics work good when they work. Mine never worked good, maybe cause they were cheap. Based on all the research i did before i "upgraded" i went with the BB7s and am not disappointed. I like that i can adjust them with no problem with no freaking bleed kit. Pair them some Avid speed dial 7s and you really cannot go wrong….