I would not recommend a body shop unless I've had dealt with them.
Mat Casiano has worked on several of my bimmers while I lived in Northern New Jersey, and I couldn't ask for anything better.
He specializes in luxury cars, BMW, Mercedes, etc.
Worth the trip.

C & D. Auto Body
176 Saddle River Road, Building G
South Hackensak, NJ 07026
973-779-0497

Ask for Matt Casiano (Owner)