I'm building my first touring bike. It's going to be of the road (non-mountain) variety. I'm not sure of what to go for on components. My knowledge is heavy on track components. Shimano seems to be the most popular, as they are in most bicycle areas. I'm a fan of Campy personally, but is there a reason I never hear of Campy on a touring bike? I think I will probably at least go with Campy derailleurs and friction shifters. I know their track hubs can't be ridden in the street, but are the road hubs pretty durable and dependable? What other hubs should I look at?