There is only one Duke 500, and the configuration is slightly different in different years. The latest 13 model is already a cable TV CD from Yan Hao. For urban roads, there is not much difference between V brakes and disc brakes. The braking force of the V-brake is similar, but the feel is biased. A broken rim with one or two spokes has a slight effect. Disc brake has better braking force and softer hand feeling. If the spokes are broken, you can continue riding, which has little effect. V-brakes are easy to adjust, but Yan Hao's cable reel is really troublesome to adjust. Urban roads are completely adequate, and you can commute without mountains. Roads or folding bicycles are good choices. . . . Big line, popular, java, KHS, Wolf Road, Ouyama and so on are all good.