SHIMANO SHIMANO SHIMANO!!!
i have campag on my old bike, and the shifting, although good, aint got nowt on shimano. which is just perfect, 'smooth' is the perfect word to decide the difference. my campag thumps its was from gear to gear, which mildly disrupts the rythmm. while the shimano is just silk like, you almost have to look down to make sure it has shifted its so good (except you obviously feel the difference)
and ian, whats wrong with the chainsets? there modern, and ultra stiff, and cheaper than that carbon stuff which is gonna break if your bike falls over outside the cafe!