I had a Hope Disk Brake on the front of my bike for a while. I changed to a XTR V-Brake and i would never use a disk again they seem so much better to ride with. I dont use a rim grind with my V-Brake all that i do is run a good cable with a set of heatsink red pads, I then put a small amount of tar on my rim and it is so sharp, I love it.