John, I'm not sure if you are asking a question or making a statement . . .
I've played PA800's, the PA3X, and just a few days ago the PA600. Of the three, I have only owned the PA3X. Korg has some nice sounds, nice rhythms, and literally everything is editable. But, editing is not as simple and straightforward as the KN's. After working with the PA3X for about nine months I decided it wasn't for me and got rid of it. I was frustrated with a lack of registrations (only 4 STS buttons) and delays in voicing reaction when changing song book selections or performance selections. I love the instant reaction of the KN panel memories.
I'm back to the KN7000's for keyboard use and my Roland combo organ (which has 8 registration buttons like the KN7000) for home use.