Reply to Practical aspects of a 4 channel mixer for a mobile DJ?

Hey DJTechtools,

As a beginner mobile DJ I was wondering what the practical aspects of upgraded from a Kontrol S2 to a 4 channel mixer such as the DJM 800 or Xone 42 compared to something like the DJM 250. At home I generally play a lot of UK Hardcore and house so the Colour FX on the DJM 800 are quite appealing to me. However I can't justify, possibly, upgrading to a DJM 800 + CDJ 350's or 850's if it's not worth it for mobile work.

'Preciate any help and input
Cheers.