I love Tim.
I bought a shitty used car and it kept DYING when I would drive uphill, and I was new in town so I asked for some shop recommendations from people online and a bunch of people pointed me to Walters. He helped me isolate the problem to my EGR valve, and while it wasn't a cheap fix, I can't imagine I could've gotten the work done any cheaper. I've also had several other problems, and he's always trying to save me money and do things as inexpensively as possible.
I wouldn't say my shitmobile runs like a dream or anything, but it's definitely in much better shape than when I started.
And I usually don't have to wait too long for repairs. Typically I can drop it off in the morning (after making an appointment a few days in advance) and pick it up later that day. Though, they do seem pretty busy so I try not to expect them to get it done too quickly.
And I have to say, I really don't care if my mechanic is a friendly, personable guy because I'm just paying him to fix my car and as long as he does that right I'm happy. But Tim is one of the nicest guys I've ever met, and I really enjoy talking to him.