I have driven the Scirocco R and it is fantastic to drive handling is excellent sounds brilliant and is very quick. I have also driven the Golf R on extended test drives and would choose this over the Scirocco simply because it is more practical. However I have not gone for either as the best on the bunch (IMO) is the ED 35 which I have ordered (5dr DSG in Carbon Grey 19" Glendales plus more options) and it will be delivered in early March.
Not knocking the ED35 as it is indeed a nice car, but better that a Golf R or a Rocco R I don't think so. They both have more power, they both have better brakes etc, they look better and they both lap tracks faster than the ED35.
I suppose it depends on what your definition of better is, mine is
speed,
comfort and
practicality, therefore the Golf R IMO is the better car.
Jim