don't forget T2's as an option if you want to do KW based units.
The big difference between the Club Sports and the V3's are the CS use linear springs and different valving. Other than that they are pretty much the same.
The T2's are V3's with linear springs and some custom valving spec'd by RCE. I've had mine for two years and love them.
The TIC AST units are excellent as well, so don't rule them out either.