In the last 7 or so years, Yamaha added the Ensemble feature, and then cribbed the idea of a chord sequencer from Roland and Korg. Korg added the KAOSS feature (which I personally doubt that I would use.) [EDIT: and they also now permit auditioning a style directly from USB, thus finally achieving parity with the other brands.]

As I understand it, the Genos metaphor is to have a more flexible, user-defined control layout that allows a player to affect the voice or pattern in real time. But not nearly to the extent of a Montage, etc. Go back a few months on this forum and search for a thread titled "Montage as an arranger." Pretty eye opening!

So frankly the Genos, Pa5x, etc., is more "innovation theater" than real innovation. The basic feature set of the arranger pretty much stopped evolving around Y2K. My perception is that it's the same old software with bigger wave ROM samples and hopefully more processing power. For a while it looked like that trend would be taken to the extreme with Yamaha's audio styles, Ketron's real guitars, etc. As a MIDI guy, I'm glad that trend DIDN'T continue. I'll take MIDI over audio every time.

Unless Roland makes another TOTL arranger or Yamaha permits more flexible chord fingering (and they won't!), I'll probably play my BK-9 until it wears out. My $.02.