Need help with brakes
 

I have a 2006 Audi A8l and I wanted to know what are the best brakes for my car or should I get the OEM. I have a guy that does brakes and is not charging me too much but I'm hesitant because I want them to work like it came out of the factory. Any help on the subject would be great. What brand is best? Should I have him fix the brakes? Are there special tools involved in fixing my brakes? One more thing he does my oil change and the service light won't go off. What can I do about that?