I've been to Motronix one or two times, the last time they replaced a window actuator on the right passenger side of a Porsche 911 Carrera S. Everything went fine. The price was comparable, better priced than taking it to Porsche. They took the car in on the same day I called and the job took two days. The window is working fine now. They're a good shop, I'm going to go back to them for other stuff.