I can use a sound on the Move that’s kinda what I want, then when I move it to Live and want to tweak it I can constrain my choices to similar sounds rather than be faced with the entire library.

Hm, I haven't seen 'em in release firmware yet but it's possible I need to update.

I feel like the Prime 4+ does everything the XDJ-AZ does but for significantly less money. Good ol' Pioneer tax.

I was going to say maybe the AZ has better stem support (Prime 4+ stems are still in beta) but apparently it doesn't support stems at all??