I go nowhere else but Luke's! My favorite things about Luke's are their honesty and their warranties.
They are completely transparent with what they're fixing and why, what's essential and what isn't, how they can consolidate costs ("we're going to have to take apart X for Y thing anyway so if you decide to go with getting X fixed, too, we can reduce the cost of labor"), and they are just exceptional with communication - how the car is coming along, the results of the diagnostic tests, etc. I can count on a phone call as soon as they find something that requires a decision from me. Plus, with the whole online report thing they have going on now, they will actually take pictures of the problem areas so you can actually *see* they aren't BS-ing you (and everything is neatly organized into categories of "Good," "Needs Future Attention," and "Needs Immediate Attention" with descriptions of each issue).
Additionally, the warranties on their repairs are amazing. I've probably saved as much as I've spent over the years with Luke's through their great warranties. One of the big things is that I never have to ask if anything's under warranty or make sure I'm getting the appropriate repairs free because they tell me up front ("if the leak is coming from the crankshaft seal, that'll be under warranty, so that would bring your estimate down to $X").
In short, I've never been so at ease dealing with the folks at Luke's Auto. And, at this point, I think just about every mechanic there has had some experience with ol' Velma (my '94 Accord Wagon), so it's not like just one person is exceptional - *everyone* is truly fantastic at Luke's Auto!
Many thanks from a customer-for-life,
-Chaz (and Velma)