Just finished putting Eibach sport suspension I ordered from Germany on my Etron. Vastly improved handling and body roll. Don't know why Audi does not offer this on the car (or why Eibach does not sell the suspension in the US), as the car weighs 400 lbs more than a regular a3 and REALLY needs stiffer springs and lower center of gravity. The ride comfort has not changed, but it is much more fun to drive.
https://drive.google.com/file/d/0B1h0CT1S3FuTWWhRVmcyLTdobTA/view?usp=sharing
https://drive.google.com/open?id=0B1h0CT1S3FuTWlZkdW40ODR4WjQ
https://drive.google.com/file/d/0B1h0CT1S3FuTWWhRVmcyLTdobTA/view?usp=sharing
https://drive.google.com/open?id=0B1h0CT1S3FuTWlZkdW40ODR4WjQ