I work at a bike shop restoring or building vintage bikes. I have an apreciation for both camy and suntour. Shimano i like as well but not as much as these other two. As another said above me Campy pretty much had it easy for years and years until the Japanese discovered how to make a better shifting derailure. I think it was about the time that suntour superbe groupo came out that Campy got scared. I have superbe on my lotus and would not trade it for campy record. Why? cause its different and shifts better than old school campy record. Better design. Is it as pretty. Not really. Italians knew how to make a beautiful bike with beautiful components. A quote i remember from Sheldon Browns website "campy derailurs are built very well but dont shift well...result..they shifted like crap forever"...or something along those lines.