It has two of my favorite SA voices from the Tyros2/3...Jazz Rotary, and Rock Rotary...organ voices that are awesome and ones I used a lot.

The MP3 playback and new screen, are nice additions, but matter little to me.

Having some new styles is nice, but I usually use my own.

I have one on order to try out, and to demo as well....since I presently do not own an arranger (I have the S900, and Tyros3 on my Yamaha sample account), I may end up buying the S910 if I like it.

Ian