DaVinci used Campy shifter dye to the quad chain ring. Campy front shifters allow for more adjustability. my Davinci is great. any drawbacks to Campy can be be explaned away with the independent pedaling. Most people dont worry about upgrading and changing over. They buy their bike and ride it. Our DaVinci is 15 years old and it is great. Bthw, the dearailures are likelly Sram, with the rear being modified by Davinci for the necessary Campy pull.