Donny, you have a perfect opportunity to hear things for yourself.

Try playing your S900's Live!Grand in it's mid range...from "A" below middle "C" and up to the "C" above....slowly going from note to note chromatically.

Listen and observe how each note sounds like it was sampled from the same piano.

Then, go to Fran's and try the exact same thing on his G70.

Do the notes have different tones and decays as you go up(or down)?

Are some thinner and of shorter duration than others?

Then make up your own mind, my friend.

Ian