Quality of Quickbooks Desktop ProAdvisor Training and Support?

I am transitioning back to Quickbooks Desktop after dropping it for a number of years. I am a small business owner and take care of the books for a few small businesses. In the past I have always had the Accountant version to accommodate all potential needs and for bulk edit functionality when needed. 

I am trying to decide between the one-time purchase option vs the ProAdvisor annual subscription. I understand the latter comes with support and training, per the phone sales folks. I am curious to hear what the quality of the training materials are like. The phone sales person I spoke with could provide scant little info about what the materials were like in terms of format (video based, text based), scope, current-ness, and quality. And said there were no examples I could see prior to purchase. I'm confident I could get up an running without training, but it has been a number of years since I've used QB Desktop so am open to the idea of having a good (preferably video based) library of tutorials for reference and ramping up. Assuming they're good. Otherwise, I'd probably just go with the one-time purchase option.

Hopefully I won't be needing tech support much. But in the event I do, how good is it? Is it phone based? Are there long wait times? Are the techs knowledgable/helpful?

Any insight based on experience would be greatly appreciated.