The beginning seems to be more commercial in general than your usual style. However you managed to make it great to listen to unlike most commercial stuff. As for the second part, if you're going for dubstep style, I would probably put some more strenght in that kick/snare though, and maybe wub wub bass or whatever they're called (not overdone either, since it's melodic).
Nice work on this one.
By the way is it me or some of your previously posted songs aren't on Soundcloud?
(I also saw some that I didn't see on the forums such as Maintenance, which sounds cool as well)