To me its sound isnt as good as on the sx900 /Genos , its very dull , mono , not a replacement for a high end arranger in my opinion.
Impuls
Could you please post some audio demos of styles played on your Genos. It has an internal wav recorder, so it is easy and painless. We will match them here below with some "corresponding" styles recordings from a PSR S770's sound engine driven with our GBL software. No playing abilities involved: just start the sequencer and push some variation/intro/ending/fill/break buttons. That's it.
Then everybody could directly make an A/B comparison and see all the difference (if any, how much, and in favor of what) a 4 k€ flagship keyboard brings to the table vs a 2 generations old mid tier arranger.
And decide if the money is well spent with the "latest and greatest" piece of hardware money can buy. With it, if you have pockets deep enough, for sure you will not go wrong. Maybe not the most effective way of spending money, maybe your audience will not notice you are a wealthy man. But, who knows.
Saying "this is better than that" without providing any evidence is not constructive at all. Especially if you listened from different speakers and/or try to recall from your memory an audition made in the past.
P.S.: GBL can drive, not only a PSR or Tyros, but also a Genos. Taking advantage of all the DSP power available (even beyond what is possible with the stock firmware built-in).
And in that case, with exactly the same sound generator, but with grossly different features offered by the style playing engines, no doubts who will win. Hands down.