Typical user complaints .... poor access to certain features and the piano & electric pianos don't compare to the Korg.
I never liked a Korg grand piano sound till the latest version of PA80 hit the streets. Now, it's very pleasing to me.
I didn't like the playability of the piano on thge XD9 either. The actual sample tone was nice, but it doesn't respond well in a dynamic context. It's very one sided.
The biggest problem is the navigation. we like buttons for manual bass, full piano mode etc. Standing up, as we do - footswitches are too clumsy.