I had a good experience with the local Aamco shop, but my buddy didn't.
He ended up in court with them.
I recently had to have my dodge dually trans fixed. Went to do a tranny service and found part of a retainer clip in the bottom pan.

I asked three different mechs for suggestions and got three different names.
Then I found a shop that specializes in dodge tranny's and had an open bay. The owner uses dodge exclusively for truck pulling competition, so I figured he had to know dodge trannies.
Cost me big bucks, but all went well and still is.
Sometimes It's a crap shoot, or fate, that decides the outcome.