John, the performance memory of the PA's does not work like Technics KN panel memories. That is primarily why I got rid of the PA3X. There is a significant delay in voicing changes with performance (or songbook) changes. When you use a foot switch with Technics keyboard panel memories, the voicing changes instantly and the rhythm changes at the start of the next measure. With Korg stuff both voicing and rhythm are delayed till the next measure. You simply can't make voicing changes in the middle of a measure with Korg stuff unless you select one of the four STS settings (or manually poke at buttons). Four is all you get! And, you can not make changes in rhythm style using the STS buttons. STS registrations are locked to a specific style.

John, there is no need to go through all the steps you listed for Technics panel memory selection during song play. All of this is done as a part of the song setup process and is available almost instantly as a part of the load process from SD card. All you have to do is increment through as many as 24 panel memories as you play the song. Each SD load gives you a new set of 24 memories for the next song. This is the way panel memories were intended to be used and it works perfectly.

There are many songs that I set up where a different rhythm is used for bridges or for part B of AABA format songs. Your only choice with Korg for style changes is to select a different song book entry or a performance setting with it's inherent delays. With Technics it only takes a simple switch to the next panel memory. The voicing change is instant and the style changes at the start of the next measure. It is a significant error to assume that performance registrations on a Korg is equivalent to Technics panel memories. But I agree that Korg works fine if you don't mind poking at buttons while you are trying to play.