"Also, I really don't think the Gem Genesys has anywhere near the power of a Korg arranger...maybe the older ones, but most certainly it's not in the same league as the PA-800/PA-2XPro."
And how do you know?
I have seen the Korg PA1x pro and the Genesys rivals that Korg.
Now I have never seen a Pa 2x or 800 so I don’t know where it stacks up, but from some Korg users, they tell me that they would not upgrade to a Pa2x pro from their PA1x pro … they don’t see such a big difference.