Weirdly, it doesn’t really matter too much what you get. You’ll be buying blind, to a certain degree, and because you are currently unsure as to what your path will take, and what the terrain will be like, it’s difficult to know which vehicle to buy. I’d just suggest you don’t spend too much money at first because:
I would have to agree that choosing the software is more important than which controller. But as I stated before, everyone has their opinion on which is better and why. My first controller was a Numark Omni which came with Traktor 3 LE that I immediately upgraded to Traktor Pro. So to me Traktor makes a lot more sense than Itch. The wave forms are bigger, the loop controls, the mixer interface, everything is right there in front of you. I didn’t like Itch at all, it seems so empty, have tried a few times, but could never get into it. Baseline Brine prefers Itch, I prefer Traktor, neither of us is wrong or right, its just whatever works best for you and makes the most sense to you.
The Xone DX is a great choice. I replaced my Numark Omni with a DX and I love it. I use it with Traktor and it maps perfectly, some might say it works better with Traktor than Itch. I heard that A&H were originally building the DX for Traktor and that deal fell through so they went with Itch. Who knows if thats really true but it does map perfectly with Traktor and its very solid with a 20 channel sound card. I paid $599 in August and now its down to $499, definitely a great buy.
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^ wern’t you just asking what controller to get in your own thread TrevRand 
I see you have done some research with some good results 
chucking a Numark omni control in the mix. Should be able to pick up one of them for cheap as chips bro. has a built in soundcard which is a bonus.
All the basics you need for a 2 deck + effects controller. (come’s with traktor le for a good introduction)