RichinPeoria....

I had no intention of writing an all-inclusive report for the OP. He needs to go to the Campy website and read-up on the details. There are some mistakes in the descriptions of the shifters.

There are a great many differences other that those you mentioned. Veloce brake levers are aluminum. Campy still lists aluminum or carbon brake levers for Centaur, but you won't find the aluminum levers available at many places (maybe none). SR has one Ti part in the shift mechanism to reduce weight and cutouts in the brake lever; both sides of the RD cage are carbon, the lower RD pulley bearing is a ceramic ball bearing rather than a ceramic bushing, the BB bearings are CULT ceramic. Go to the website for more.