I used all dura ace parts (minus saddle/straps and bars=still looking for AX drops! )
I only use all dura ace because I have an ocd thing with having all one company. That being said i haven't broken anything and all the parts seem to be of high quality. Worth it? I probly could get away with riding a cheap group on a crappy frame but I don;t think I would enjoy the ride as much. N+1?


Edit: I'll add I don't ride a road bike so I can't comment on on their gearing systems.