When I was racing and paying for my own stuff (still pay for my own stuff, just don't race anymore) I used a non-index Suntour Sprint RD and Campy SR front (still do, on my old crit bike). Now that a Superbe FD (endless band era) has come my way I'd be leaning toward the all-Superbe option. Of course, using a New Winner FW, my all time favorite.

Campy is a close second. Pretty! Get some pantograph shift levers to match your frame like I had on my Olmo.

Shimano DA 7400 is not even in the picture. Too darn loud, shifting or just running along. Snap! Snap! Grumblegrumblegrumble.