Hi Christian. Interestingly enough, I too played (auditioned) the Roland G70 on several occasions, and noticed the very same thing you did. I'm convinced that manufacterer demos are not typically produced in the same manner as if were played by us, but tweaked using studio technology to impress (and possible deceive) the listener. I've since learned to never trust or rely on demos alone, and that imperative that you have the opportunity to play the keyboard yourself before coming to any reliable sound conclusion: Trust your ears, and yours alone.

The overly quantized (robotic 'omph pa pa') sound was most apparent with the 'swing' styles, of which so much require the alive breathing (un-quantized) sound of its swung 8th notes. Duke Ellington said it best in the title of his song: "It Don't Mean A Thing If It Ain't Got That Swing".

Scott