Reply to Which 4Ch Mixer for a Traktor 2x Kontrol X1 setup?

I played at a foam party and someone managed to empty a bucket full of soap water over my gear . My MacBook is dead and while my Xone:92 and two Kontrol X1s are still being serviced, chances are slim that they can be fixed. The Audio 10 however seems to have survived. No one pays btw so I am picking up the bill. You live and learn...

Anyways, I will be replacing the X1s with the newer MKII model, but I am undecided as the what mixer I should be getting. I actually don't want to spend the money on a Xone:92 anymore, since I am playing less in clubs and bars. DJing is becoming more a hobby to me nowadays, so I'd like to stay below $1000 mark.

Currently I am looking at the Pioneer DJM-750 or the Denon DN-X1600. I am not sure whether the Denon is already outdated, or still able to compare to more recent products. Any input on these two or any other recommendation would be great.

BTW, I was also believeing about to just get a S4 and be done with it. Anyone made a switch to all-in-one controller and is nor regretting it? I believe I am more comfortable with a 'real' mixer and modular controller setup.