1st gen dura ace (with the moveable gate) - 190 g
nuovo record - 194 g
2nd gen super record - 191 g (!) I thought they were lighter!
1st gen suberbe - 170 g
superbe pro - 186 g
Excel Rino rear - 175 g
and for comparison a Campy Gran Turismo - 363 g

They all move the chain. I think that the superbe and the Excel are the best in the pile, but the differences between any of the slant parallograms are very slight. The older campys just don't quite work as well...and by that I mean that the lever has to be moved well beyond where it needs to end up to cause a shift (Simplex seems to be the worst in terms of lever travel and overshifting). This is dependent on lever, cog and chain as well, so the setup options have quite an effect on shifting. The bottom line is that whatever setup you use, if you ride regularly the hand learns where the cogs are and how to move to make the change. Clicking is pretty much a beautiful marketing scheme IMHO. Unless, of course, you're up out of the saddle and all strung out at 186 bpm making a little rise at the finish line, and need that extra tooth to outsprint your buddy...then clicking comes into its own.