So with a month to go for delivery on my car i'm wasting time by looking up stuff I don't really need. But coming across some big brake kits (vwr for instance) I am wondering if they would be worth the money.

I would assume upgrading from something like a Golf GTI or lesser spec would be an fairly good upgrade, but from an Golf R or Scirocco R would the gains be that great? Are they that much of an improvement over the OEM ones? I'm of course basing this of no knowledge whatsoever and really just on the rotor sizes. The scirocco comes with 19's so I'm sure even bigger brakes would fit over the VWR kit... but what would the options be then? Do you have to find parts and mix and match to suit or do bigger kits exist?