My Auto Surgeon performed a diagnostic for me recently as I couldn't find the source of a leak. (They saved my bacon once before with an AC issue so I called them as soon as my new issue popped up.) Like before, they were fast, friendly, knowledgeable, and very professional. They have a small but comfortable waiting area where I was able to work (seating/counter, charging cables, Wi-Fi, coffee). They're pricey, but you get what you pay for and I'm very happy with my overall experience there. I was able to fix the problem they identified at home, but I won't hesitate to go back if I have another issue. I would (and regularly do) recommend My Auto Surgeon to friends and family. :)