No-one agrees with you more than I about staying and learning thoroughly older keyboards, Henni. Had my G1000 for over ten years before I moved to the G70, had that five years and counting, now, and fully expect at least another five out of it, if not more!
But I try to stay realistic about my expectations of what can and can't be done with the technology. My only intent with my comments previously were, if you are dissatisfied with Yamaha's best, current GUITAR parts (regardless of how you feel about the overall arranger), which from your quest to find better ones (as good as the Audya's!) one can only infer, I am afraid you have a VERY uphill battle.
I tend to believe that I seldom come across user styles that BETTER the best ROM styles, simply because they use the best, most talented players and programmers they can. If THEY can't get Yamaha guitars as good as Ketron audio ones, you may be tilting at windmills. Possibly, with luck, you might be able to get as good as they have managed, but significantly better is a very tall order...
But, should you succeed, give Yamaha a call. They might be interested in using you for their NEXT batch of style programming if you can get a PSR3000 to sound as good as an Audya, at least in the guitar section..!
