You see it every time you open a copy of mountain bike. You see it every time you look at a high end mountain bike at a Local Bicycle Shop. Disc Brakes. And yet most bikes are still equiped with V-Brakes. I recently upgraded my Giant Ranier to a new set of Disc Brakes. While I was at the LBS I noticed that some bikes, in the 600 to 1000 dollar range, don't even have international disc brake tabs on the frame. So that means you are stuck with V-Brakes. What a rip off. Price is a factor ...