Im 50 so out of my boy racer stage !
Lots of cars appeal really, not considered the ones you mention as they can be fairly expensive to run although they are epic cars.
The B7 RS4 would be good if you can find a decent one but again fairly pricey to run.
Not done the M car thing yet, an M2 may be an option though as i prefer something smaller but they are a bit sketchy on the rear end.