If you want to track or autocross and you're tall, sit in an RS3 with your helmet before you buy. If you can't arrange that, sit in an S3 + "S-sport" seat package + moonroof, since that is identical to an RS3.
There is NOT a lot of headroom in the car with the stupid moonroof. Completely took it out of the running for me. Also, you can't use Schroth quickfit harnesses with the seats because the headrest is fixed and there are no shoulder holes.
OTOH, knowing Canada, somehow you guys will have the option to delete the moonroof that we don't get in the US. (Just like your ability to order an M2 with one, that many of the people in the nicer-weather states would give a few fingers for...)