I've been reflecting on this issue of the classic bike pinnacle and I have to add one for consideration. If someone already mentioned this and I missed it, apologies to them and all.
A fine lugged mid-1980s frame with an early Dura Ace 7400 group. Sure it indexes but it has a friction option too. The 126 oln is acceptable and the early ones were fitted with wide 6 speed freewheels, later 7 speed freewheels then cassettes. The finish on every component is beautifully done. The single pivot calipers are elegant, silky smooth and light action. In fact overall the group performs at least as well as it's Campy competition.
I accept that much has been copied from Campy, who better to copy. I accept the rear deraileur owes its design essence to Suntour. I also recognize that the little plastic and gray anodized bits aren't "classic" but overall it's stunning. OK, now I'm ready to be beaten to a pulp!
Randy
Corral De Tierra, Ca.