Henni, I think you are reading more into Diki's post than what there is....
Yes Fran,
You've are right. Bottom line is this: Take any arranger of your choice, & I mean any. Now add full audio to it. Now you have what the Audya offers as standard.
You lost nothing that you've had before, but you gained very much. And with Cubase or Cakewalk or the likes, you can edit your midi styles to any drop down detail you want to.
Now, you choose whether you continue using midi styles alone, or whether you start including some audio in between your performances. You are not dictated by your arranger towards any specific method. And this is the beauty of it all that I want to highlight. You have both...
Not to worry, this concludes my contribution towards this thread. Ketron did not drop midi in favor of audio, instead they maintained midi & included audio with much, much more flexibility than i.e. on the S950.
All the best my friend,
Henni