Well, I sorta liked the demo, and am NOT a Korg fan. As others have mentioned, maybe e.q. and reverb is needed on some of the lead voices. I'd like to hear some of the other styles.
I wouldn't give up on it because of this demo.
You can tell the guy is a piano player and doesn't know much about emulating other voices. I would assume he doesn't know that much about the OS either. It probably is better than this, but it's not that bad.
Still wouldn't trade my E50 for it after what I've heard so far though.
DonM