Personally, I think Manfrotto offers the best compromise between quality and value. Even more so now that they have some Arca-Swiss compatible clamps, meaning a good (RRS/Kirk) L-bracket is feasible.
I had a Manfrotto 190CXPRO4 with 488RC2, very good legs, the RC2 plate/clamp is a weak point. Replaced the head with a 468MG with a Wimberley C-12 clamp (AS-type), that setup was great up to a gripped body with white zoom (70-200/2.8, 100-400, 28-300). Likewise, I had a Manfrotto 694CX monopod with 234 tilt head and C-12 clamp, easily supported the same gear.
I'm all RRS now, though. When I got the 600 II, I added a TVC-33, BH-55 and PG-02 LLR gimbal, and replaced the monopod and head, both to deal with the heavier load. But the main reason I replaced the Manfrotto 190CXPRO4 + 468MG with the RRS TQC-14 + BH-30 was the former was too long to fit in my carry-on hard case.
Bottom line, I'd recommend Manfrotto CF legs and one of their new AS-compatible heads.