My new commuter arrived last week. It has Tiagra shirfters and FD and a 105 RD. The components don't feel any different than the Ultegra on my road bike. I went cyclocross so I'd have room for big tires and fenders if I want them (even with 35s there is plenty of room for fenders). My last commuter was Sora and, while it worked fine, I prefer the shifting on Tiagra and above much better (don't like the thumb button on Sora). And, my new bike is white...