Hi Charley,
I think Frank sells all 3.  I think he wrote on PA5x forum that he gigs with a Genos, and that he was going to test PA5x and Event to see how they go. Whether or not he’s gotten round to it, don’t know, might be worth checking,( could be a couple of weeks ago)
Don’t know if any of the guys who own Ketron have upgraded yet.
http://www.korgforums.com/forum/phpBB2/viewforum.php?f=90