Sun Devil Auto (TBird & 43rd) has my unwavering loyalty for these three reasons:
Their price beats other shops (I always call around for at least three quotes);
They don't suggest that I blindly follow my car's owners manual (if the book says to replace something at a certain mileage, they inspect the part first, and only replace it if it needs to be replaced);
They don't pressure me or try to intimidate me into spending more money.
I recommend SDA to all of my friends because I know they are a rare find.