Does anyone recommend the DJM-700?

hmm, i wouldnt go that far mate. From my experience the upper range of A&H has superior sound to pioneer.

The 800 has gay connections too.

Line/CD, Phono/CD, Phono/Line, Phono/Line

WTF!?
The first time I tried to setup my DVS on one of these I needed help from the sound guy. Why make it so obtuse?

I’ve found a b-stock, ex-display DJM 700 for £606 at a local store - very tempted given that the lowest i’ve seen a used xone 92 is £750, and I wouldn’t have to travel to try it out. I’m not entirely sure what i’d be missing by opting for the 700 rather than the 800/850, or the xone 92 (apart from the EQ and infamous filter).

I have turntables and I play a mix of house, dnb, dubstep, and maybe a bit of UK garage.

From what the others have said and from my searches the main difference is the effects. The color effects section for each channel opposed to the frequency filter on the 700. Some of the other effects are different too. Replacing some parts on the 700 would be a bit more hassle also. But ya I think they’re worth the extra couple hundred bucks or so.