Thanks all for the advice folks. Thinking on some of this, would the local Buick dealer's service department be someone to ask for a recommendation?
The reason I don't just want to go off straight internet reviews is that I think I might be a bit more particular about this than most internet reviewers. The plethora of "they were nice to me and I got my car back in a week:5 stars!" reviews don't really tell me a lot. I did the 'trust the reviews' thing my first go around many years ago with my Saab, and I don't think the paint matched particularly well for some reason. Then again, they did have a very clean and well organized shop so maybe I'm just too picky.
I'll give it some more thought this weekend...
Yes, I'm crazy.