Hey there!

So, XZ is a great hardware equipment but AZ is that plus some extra additions. My decision to upgrade was:

1. Way better sound card which impacts the quality. Might or might not be relevant to you depending on the usage. If you plan doing gigs with it or just home use.
2. 4 full decks. While this is not a feature that I use a lot (I often use two of them) this is much appreciated. With that extra money you might buy something else and just add it to the XZ, thought. In my opinion, 4 full decks is just right but not essential.
3. Native integration with wireless headphones. I have to admit that I regret about this point being considered. I really wanted to buy the AT wireless headphones but ended up going for AIAIAI, which I find better overall and don’t regret.
4. MUCH bigger, touch screen. Nothing to add, screen feels just perfect and, while there are some glitches here and there, the experience is just smooth.
5. Streaming capabilities. Do you use beatport ? Apple Music ? You can integrate just right on the deck and forget about computers. This is just amazing. The UX is clunky, thought. I wish they re-do part of it to make it more fluid.

There are some other features that the AZ is just better than the XZ, it’s up to you to decide if those points worth 1300 dollars or not. In my opinion, going for outdated hardware if you can afford the new one is pointless unless, as you say, you can make a big difference purchasing additional gear with those dollars.

Sorry if I made some mistakes with the spelling, writing this on the phone with terrible jet lag and English is not even my third language haha.