In terms of quality of a product, I'd go KW. I've had TEIN in the past (flex) and everything started creaking when going over fast bumps. No problems from my KW.
There is a difference though in performance. The KW V3's are designed for the street with some track. KW Clubsports are more track with some street. Don't think they have clubsports for us yet.
I think the monotubes are better compared to a set of clubsports.
Great resource
http://www.ek9.org/forum/suspension/...info-tein.html