After having problems with my Mistubishi that another shop could not diagnose/repair, a friend recommended Lioe's on Beacon Hill. I spoke with Ken there, who seemed very knowledgeable and was able to diagnose some of the problem on the phone.
I had my truck towed there and he was able to look at it within 2 days. He replaced both timing belts and some other work at less cost (parts) than another shop quoted. My truck runs great now.
Their shop labor rate is about the same as anywhere, ~$78/hr, but they were more knowledgeable than other places I've been to and were pleasant to deal with.