I saw the AX-7. Can't wait to try it. Onboard sounds (Sonic Cell) make it a lot simpler to go wireless.
But I tried the older MIDI remotes Roland made, and ergonomically on the left hand controls and bender, it was a pale shadow of how good the old Yamaha KX-5 is. Much better, bigger keyboard, though (although it makes moving around more cumbersome)...
A friend has told me there's someone quite close to me that has a Roland V-Accordion. I can't WAIT to try THAT out! No dealer anywhere NEAR me has one of those...