I like going to the M Shop in Eagle Rock for service because I've had nothing but positive experiences there. I've never had anything go wrong since I've been going there, and when talking to other customers who have had a few things go wrong, they say that there has never been a problem with resolving the issues.
For body repair, I go C&C. Nate's the guy I usually deal with and they do really good work. In 2003, I got into a major accident where an SUV t-boned me. When I got the car back from Nate, it was like nothing happened. I'm still driving that car to this day, as my daily.
For rim repair like scuffs and curb rash, I go to Long Tran. Another super cool guy who does really good work.