Which DJM for the XDJ-1000s, 900NXS, 850, or 750?

I'm going to buy 4 XDJ-1000's and a mixer.

In the demo vid posted about 8 months ago you guys use the DJM-900NXS from the looks of it. I would buy this one, but I'm a little short on cash so I'm looking down to the 850 or the 750.

Now I know the XDJ-1000 doesn't have digital outputs so it's wasted on the 900NXS, and I don't plan on connecting my laptop so that extra headphone que isn't needed. The 850 seems about right, but the 750 is only $1000 witch really sounds good to me due to my budget.

So, should I save-up the extra $400 and get the 850 over the 750, or save another $600 on top of that for the 900NXS just because it is high-end.

And yes if I had the money I would get the DJM-2000NXS with CDJ2000Nexus instead, but nope I don't.