Tell me about, I can't stand them! Poor stopping power, poor modulation, and very loud. I'm using an 18.5 frame. I don't have a bleed kit and have never done it before but I'm sure I could figure it out. However, I can get Shimano XT's for $112 + $12 for a Shimano bleed kit. I think I might go that route, especially since the XT's seem to have everything I'm looking for and have very good reviews.