...TBH, the Ketron audio feature doesn't even work that well with it's FAR better HD and RAM sizes and pipelines than the PSR...
Care to eloborate..? To be fair, the issues that you might have picked up is supposed to be solved in the AJAMSONIC upgrade. Have you played around with that a bit as yet? Over and above this, OS5.0 is due soon. It will bring with it another wealth of improvements.
Would you care to attach something over here to demonstrate?
And lastly, I doubt if anything exists as yet that's perfect, be it an arranger, any other item or mortal being. Ketron ventured full on four years ago where Yamaha still fears to tread, even to this day. Give them a little credit at least - they deserve it!
And very, very lastly (see, I'm also not perfect)... :-) ... we all know the more perfect you make music, the more "cold" and machine like it becomes. Warm music is not supposed to be "perfect" at all. Did you not notice the various style creators trying to capture this effect into their latest creations and the improvements it brings with the newer styles?
The Audya is as close as it comes at this stage to mimicking true human performance and is does a SUPERB job at doing just that.
You should really get your hands onto one for a weekend or so...
Henni