For me the TVC-33S. For me the folded lebgth is very important, as I normally carry it strapped to my backpack. Also, I'm a short person, so I can survive without the extra length. I use a leveling base and an Arca D4 geared head. I am very happy with this combo.
I have also Gitzo GT3541LS legs (I think that's the name). The RRS legs are much better, IMHO.
The tripods I have right now are:
Manfrotto 055 (aluminium)
Velbon Sherpa Pro 630 CF
Acratech Ultimate (very nice but I got rid of it)
I'm really happy with the D4, after replacing Arca Swiss QR with RRS level type QR.