I've never had any petsmart trainging, however a girl at work took her Bouvier there and was happy with the outcome.
Same as any training, some people are great and others not so great. It depends what you expect to get out of the training that should help you make the decision.
Bree 9 year old GSD
Keesha 4 year old GSD
Cyrus 5 year old GSD
RIP: All my angels.