Reply to DDJ-SX vs New Kontrol S4 Mk2

Hey guys I'm in the dillema of wanting the DDJ-SX ror the new kontrol S4. I'm just not sure if I want to go serato or traktor pro. I know this could be an extensive discussion but I love mixing edm primarily (house, trap, etc) but if I could get some good reasonable pros and cons of each so I can choose the right route that'd be awesome. Thanks guys!