I really like this :D
It's like a filthy vs a calm type of thing, and it works well. At first I thought it was gonna be chillstep, but then the drop blew me away.
Out of curiosity, what do you use for your basses? It sounds too good to be Massive, unless you're just running it through a few VST's or something.
Either way, keep it up :D those techno/dubstep mixes own.