To me a certain degree or (as odd as it sounds) lack of "minute inconsistency" translates into a dull piano patch IMO. Yammie's pianos IMO are an excellent example of "cheating" in terms of the piano sounds. If you find EVERY note to be dead on consistent from step to step that tells you they cheated a bit.., and perhaps that consistency means each note is nothing more than the note you just previously played, but digitally "stretched" and enhanced.

I want the sound to be as natural as possible... Diki's right in that a real acoustic piano is inconsistent too. That's why you can easily tell the difference of a digital and real live acoustic grand. In fairness to Yamaha.., they're not the only ones cheating.. They're all doing it. Some however may be better cheaters