I want to add an arranger to my setup (I am an arranger newbie) and was considering the new Tyros 4. Thing is, I love the feel of my Motif XS8 and really don't need a second board. The Audya 4 seems like it could definitely be a solution. Is anyone controlling this with a Motif XS8? I'm curious about ease of use, functionality, how much work on the Motif side to control things as you wish, etc.