I use the B-3X in a live setup with 2 keyboards. I'm still struggling to get the latency down, but I'm otherwise very happy with the B-3X.
It would be really nice if it were possible to choose a "Morph" function which, when you switch between the individual (24) Drawbars settings, it happens in a smooth transition of e.g. 1 - 5 seconds, exactly like if you adjust the drawbars manually. It could be made with a "button" to select or deselect Morph, as well as a field with selection of "Morph time" e.g. 1 - 5 sec. This should not be a global function, but must be stored in the individual programs
Something else: Scroll bar in Drop Down menus, e.g. at PROGRAM CHANGE ASSIGNMENT, is very narrow, and it is very difficult to hit with a finger on a touch screen. Touch screen, I think, is used a lot for stand alone, live use.
Yours sincerely
KeldEHS1 Denmark