By the way, I ordered a Bob Jackson World Tour frame, which requires canti brakes, based on all of the comments. Hopefully my mechanic will be able to set up the brakes properly. I plan to use the frame for my commuting bike, but might do some occasional tours. The canti brakes give me a lot more options with regard to tires and fenders, and I'm going to start out with Shimano BR-R550s since I've always had good results from Shimano parts (and my components are a mix of Ultegra and DA already).