We took my wife's Nissan Sentra there; they guys were awesome! Essentially, anytime the car got hot we would smell this burning putridness and couldn't figure out where it came from. Personally, I thought it was the brakes (because I had recently self-perfomed brake work and just thought that I'd screwed something up).
Seriously - took it to Firestone, Pepboys, and Midas - I got everything from "There's nothing wrong with your car," to, "Looks like you'll need to replace your rear brake cylinders and battery."
The guys @ 11th street took a look at the car during the day and found that we had a leak from the power steering line. Once the part came in, we took the car back and it took them less than a day to fix it.
Their prices were extremely reasonable, demeanor was incredible, and they really exuded a professional sense in their work.
Definitely going back any time I need more work on the car!