The PetSmart training is usually OK, at the ones I've been to in SD the classes are held inside the stores which I personally don't care for because there are a few too many distractions for owner and dog while customers are shopping and stopping to watch and not really enough room to really work the dogs. There are definitely personal trainers that do one-on-one training (expensive), but most obedience classes are in groups from say 5-15 dogs and are usually held in a large, open area outside like a parking lot. I'd check into these before doing the PetSmart deal and then make a decision for what you feel best fits you and Houdini.
