I'm happy with the sounds I have on my S910....and with most of the arranger KB's I've had in the past few years ...how much more realistic does anyone need and for what? its an KB not the real instrument....I want a unit as easy to play as possible, so open units are not my bag for sure....tweaking and adjusting, etc, etc, gives me a big headache I just want to push buttons and play. In the future all I want is better on-board & on stage navigation..give me more sliders, buttons, touch tilt screens, more inputs, separate playing modes all with easy access while playing and smaller size & lighter weight.....we'll see?