Originally Posted by
tendency
Man, I had forgotten how perfect the Suntour Vx front derailleurs are: buttery smooth, light yet precise shifting. Completely bomb proof. Absolutely destroys the Dura Ace 74XX and 7700 models I've been using. Heavy clunky and I have to say surprisingly delicate build quality (talking about the Dura Ace). Not a fan. Wow. Suntour Superbe Pro is a close second but in my blind taste testing I prefer the Vx even over the Superbe Pro. Impressive stuff.
Just had to get that off my chest.
I agree the Suntour Vx is a fine front derailleur, but I'm going to respectfully disagree that it destroys the DA 7400 FD. I find the DA 7400 (no experience with the 7700 line) to be quick, precise, and reliable. In terms of weight, since you mention DA as heavy, the Suntour Vx FD is a respectable 114 grams, but still about 20% heavier than the DA7400 or Campagnolo NR FD at 94 and 95 grams respectively. The Mavic SSC front derailleurs, now those were delicate in my experience (tweaked cages and cracked clamps).