I am thinking of purchasing one of these component grouppos for my bike. I am not trying to start another Campy vs. Shimano thread, I just wanted to know if anyone has any experience with these components and if there is anything I need to know before purchasing. Thanks.
I would check the price difference between the groups you are purchasing, I dont' see xenon or mirage groups sold very often. But normaly next level up is well worth the money, and the lower end you go the less of a difference it actualy is.