Sachs is the one to go for, LUK can't handle Stage 2. I've not had a problem with my carbon/kevlar VR6 clutch from Techniclutch, been running it for years now. I also had one of their 4 paddle clutches in my Escort RST years ago, again no problems.
I may just be a lucky one though so don't take my word for it!
This is the clutch I got from them all those years ago... (7 actually, wow time flies)
and this was the state of my old one, it only lasted a few months at stage 2; it had only done about 50k at the time too!