G'Day Michael, well you looked at the same cars we did.
But I tell you what, once wifey'd driven the S3, she was simply not interested in anything else. Our spec is Performance Package & Panoramic Roof. Dealer was able to source that spec, so we didn't have to wait.
CSV, yes, I'm aware that the upcoming Golf R has the same engine, but I think the S3 body may be a little bigger. No doubt the Golf R is a top unit, but the waiting list for that, when it's released, will be long, I reckon.
The S3 is a bit "under the radar" at the moment, Audi haven't made a big song & dance about it, but Audi Aus are selling all they can get, & more...4-6 month wait for customer order cars, so we were lucky to get ours.
Cheers, Pickles.