I have been reading up on this and the TT-RS, which should be coming around the end of the year I think? Both will be cars that I will test drive.
The RS3 is interesting because many people think the F80 is too big, but would enjoy the practicality of 4 doors. The RS3 might slide in there nicely as another option - I am certainly interested.
When Top Gear did some ride-along laps with one of the test cars recently, they went on and on about 1) how quick it was and 2) that the new RWD-biased AWD system allowed all kinds of "tail-out" excitement. Imagine if you could get 80% of your RWD feeling, but also have the peace of mind of AWD...
Should be fun.