ATE brake rotors are the best (IMHO). They are closest to the OEM.

As for IT, etc. make sure you follow the GCR if you have plans to race in IT later. There are mods that are allowed in Auto-x that are not allowed in IT. Some of them are expensive to undo. You can race an IT built car in auto-x classes, but you cannot mix and match the rules.

Have fun!

Jason
ITB Scirocco #17
NERSCCA