This song is pretty great. It has great dubstep and nice melodious sounds within it's parts as well as after the dubstep.
The only problem I have is the intro and the drop. The intro is pretty repetitive and sounds rather stale because there are no background sounds to go along with it.
As for the drop, it didn't build up well enough and the dubstep came in abruptly, so that pretty much killed that segment. Still a good song, though.