I was sick of the awful service and HBL and found Volkswerks through talking to friends. This place is a must for audi owners (i own one but they also service volkswegon). They are honest and always give me options and many times recommend not to do something which i never heard at HBL or any other repair shop. The guy who owns it, Ted is there every day and is very knowledgable.
The one downside is that they are very busy so sometimes it takes some time to get an appointment.