I've test rode the RC4 and the Onix, but not the RC6 and Team RC, which frame would YOU buy....? Please assume the fit for all 4 is the exact same.

Orbea Onix ($1200)
Blue RC4 ($800)
Blue RC6 ($1200)
Fuji Team RC ($700)

All the frames are CF, the RC4 is CF with aluminum lugs, and I believe the other three are monocoque CF.
I don't think I'd get the RC6 b/c if I were to spend $1200 on a frame, I think it would be on the Orbea. The RC4 is the best bang for the buck (I believe), b/c I'm getting it at wholesale, but there's something about handbuilt Spanish frames.......