I had sent the S900 back, Diki, and didn't have a chance to try them side by side, but I find a slight difference in the overall sound, the nod going to the S910.

The D/A converters could have been improved...the thing is, I'm not the only one to notice the difference.

As far as I know, the effects unit is still the same one as in the S900...nothing new that I can see...it's certainly not the same as the one in the Tyros2.

It certainly isn't a "new look" (some people hear with their eyes) as they are virtually identical, except for the screen.

Maybe the tone generator is a hybrid of Tyros2 and S900?

Again, it's my opinion that the S910 is what the S900 should have been.