I ran the CX77s for well over 10,000 miles, and was nothing but pleased with them. If I had one minor complaint, it would be that in Shimano's divine wisdom, they make you use two different sized hex keys to adjust the inner and outer pads. I have no idea why. Performance-wise they were rock solid. Check out TruckerCo for pads-- the Shimano G01As are good, but I liked the pad life and lower dust of the TruckerCo better.