Well, it looks a bit risky of Jeremy See to "borrow" third party content. Also, it looks like he's being rather pragmatic when he invites to discuss it, because comments help the channel to be more popular (YouTube's algorithm).

As for the comparison, while I'm all for variety, so far I can't say that I liked anything about PA1000 very much. Styles are a bit mechanical to me. Drums and guitars on SX900 make a more colourful picture.

But I know it's not safe to draw a conclusion based on demos. It can be that the very thing which makes Yamaha attractive is also the one which makes you bored of it afterwards.

By the way, do you get the meaning of Jeremy's greeting, when he says "what's up Jeremies...?" Does it make sence to you?