Id also go S3 mate although a do much prefer the look of the Golf
Love my standard mk5 Gti but know if a increased the power at all id hate it as find overpowered fwd cars very annoying/frustrating
Friend of mine has a Leon Cupra running around 360bhp and im affraid it's utterly pointless
Now that power in a S3 would be
Best of both worlds would be a Golf R mk6-mk7 but big money then!
R32 also a great choice but not particularly fast, £500 road tax and no Booooost could be booring too although they do make a good noise :-)