I have SRAM Red shifters, cassette, fd, rd; TRP 950SL brakes; Easton EC90 cranks on my Colnago CX-1. It's great, they work well together.
And for my workhorse Cannondale System Six: Full Dura Ace--It's great too.
I haven't tried Campy, I'm sure I'd love it too!:)