To me, a good shop has lots of knowledge and a decent selection. I want them to answer my questions with courtesy even if they are the questions of a rank beginner. At my shop, the tech is a great shooter and very knowledgeable. He is very patient with all my questions and has helped me immensely. When I complained about the rubber strap on my peep making too much noise, he twisted my string correctly so that I could use a regular peep without it turning on me. When he watched me shoot, he instantly identified that the previous tech had measured my draw length too short. He gives me fair and objective assesments of new products and seems to have a very open mind when it comes to bows. He shoots Hoyt but is always happy to work on any brand and I don't think I have heard him ever bash a particular company. The prices for the work are always very fair and if there is an issue, they fix it for you.

knowledge
selection
customer service
fair prices

Those things make a great bow shop IMO.