Ian its not perfect but works for me ...the very small 76 footprint of the Sd1+ (smallest of all arrangers) is to my liking, sounds are stunning....although styles are IN YOUR FACE and with mucho tweaking I have got them sounding real nice ...to this point....navigation is very thoughtful for the live player, key-feel is wonderful......for now Im diggin it.....
I Will Not Rule Out other units down the road from any brand as long as it suffices MY needs.....but for now its the SD1+ for me. With whats out there now I am forced to be patient.
Glad you enjoying your S900 also