Originally Posted by
T-Mar
The Dia-Compe centre-pull were made under license from Weinmann in exchange for Dia-Compe granting Weinmann the license to manufacture their safety levers. The only difference is the pad material and cables, and I doubt they'll be OEM on anything that you pick up. In such a case, I'd sticking with OEM.
There's nothing wrong with the OEM SunTour SL front derailleur, unless you're averse to the high normal action.
There were other differences. Take a close look, and you'll see that the return springs in the calipers of the Weinmanns have two windings whereas there are three windings in the Dia Compes. Also, the Dia Compes seem to have more leverage, and I'm guessing is that the difference is in the lever, not the caliper.