I feel for these guys Plans, BOT pretty much all the specialists at some point or other will do sterling work and at other times p*ss people off. Its incredibly hard to please everyone and if they get a good rep they get busy and p*ss people off making them wait. They cant win.
Seeing a lot of cars come through with histories from various places in the country I can tell you that a Plans and BOT maintained car would put me at ease that its been cared for properly. Phoenix history gives a particularly peaceful nights sleep - There are one or two where I would be checking things a bit more carefully and a couple of places I wouldn't take a mobility scooter but to be honest the general standard is very good across the board.