I haven't used V brakes but have Tektro CR-720 and Shimano BR-R550 canti brakes on two bikes that I use for commuting and Ultegra caliper brakes on my other road bikes. All of them work fine if properly set up. The biggest factor that I have found is the brake pads, and I have replaced all of the stock pads on my brakes with KoolStop salmons. I must have good mechanics because my canti brakes have functioned perfectly -- they stop well, have plenty of clearance for larger tires and fenders, and don't squeal. They also stop better, particularly in rain, than my caliper brakes.