I'm driving down state to get the windows done on my '05 Audi A4. I wanted Huper Optik Ceramic tint and there are no authorized installers north of Dutchess County.
The Tint Shop is one of the more popular places here, I think there are at least a couple more, but I can't remember the names off hand.
But the Tint shop is where my Audi Dealer sent me when I brought the car.