My latest review is the KCNC brakes. I give them two thumbs up over the Zero Gravity brakes although they don't have the stopping power of the Zero Gravity meanning, you have to plan your stops 5 feet a head of zero gravity and with zero gravity you have to plan 5 feet ahead of Dura Ace, Sram RED and Campy. KCNC is cheaper than ZG and solves some of the problems ZG had. The first one is centering, KCNC brakes stay centered and is easy to set up. Second the quick release levers open wide enough to accomodate all wheel changes. Three KCNC uses stock Shimano brake pad holders so the pads are easy to swap out and are cheaper. Fourth is they are lighter than ZG at 164gms with hardware and pads.
Now that being said would I buy KCNC brakes over Sram Red, Dura Ace or Campy? No, unless you are shooting for a sub 15lb, sub 14 or sub 13lb bike there is no reason to sacrifice brake performance for weight savings. If your bike is currently not anywhere close to sub 15lb don't give up those brakes for ZG or KCNC. So far my bike is 12.9lbs with the following: KCNC brakes, Vuma Quad cranks, Mavic Ultimates, Sram REd, SLC SL, Easton bars, Specialized Toupe saddle, Speed play pedals, Ritchey 4 axis Stem. With Rolf wheels its 13.77lbs. I will post pics later.
I just sold off my Vuma Quad cranks and was not impressed with those cranks at all. I went back to the Sram Red cranks. I still love in this order for cranksets. Red, Dura Ace and Campy UT. I still believe the best set up you can do and save serious money is Soloist Carbon with stock Sram Red Group and Rolf wheels, done deal.