Hi Nick,
From both our Skype conversations and meeting you in person,
I had already predicted you were taking this route,
and can easily understand how this would be the most logical keyboard route
for you. I have to admit now that since I've had my first taste of the Korg
arranger sound in my KMA (albeit the earlier gen. Pa50SD) , I've become hooked on Korg too, and may eventually get a Pa3x, once my finances allow.
Until then, I'm having a lot of fun playing both the KMA and Tyros 4, albeit on their own separately, with each satisfying a different playing situation and venue.

Nick, congratulations on your new MOX 6 -Pa800 setup.
When you return to The Bay Area, lets get together again.

Scott