I thought the demo was actually pretty good. The piano strings and flute sounds were pretty realistic . The guitars less so but the drums were pretty good . It also had that sound hold function where you can switch sounds whilst playing without notes cutting off . Very cool .

I have two Xms expansion boards on my korg Pa1X so I already have the quality acoustic and electric pianos . These in my view are better than or at least equal to the stock pianos even on the pa3x.