I have a friend who owns a shop,caters for lots of bikes many of them race at a high level.He uses campy and has always thought it was the best.Two years ago he crashed and wrecked his bike on a cycling holiday.His replacement bike had DA 7800 after about a week he was so very impressed with dura ace.

He is not so impressed with sram,lots of folks have come back to him with difficulties with sram.