I like the chill pads at the beginning. The chord progression is a bit fast-paced, though. The piano chords at :07 are a bit too loud and clunky - I would try spacing out the notes more (maybe by transposing some up or down an octave) so that they sound more open and full. The "reset" at :35 was nice, though - I like the walking mid-range pads, even if they were a bit quiet. The bassy wubs at :51 sounded glitchy and cool, but also could've been a bit more dynamic after a while (filtering automations or a wider pitch range might've helped). The wubs also get a bit grating and overly loud by 1:58.
I'll commend you for the non-traditional dubstep structure. Some of the transitions are a little abrupt (like 2:24), but overall you've avoided a lot of the structural cliches with dubstep. I also like the liberal use of hi-hats and frantic section (3:58) towards the end.
Overall, this might not be your best, but I definitely appreciate how much you experiment with new genres and sound designs. The rhythmic content here is also really cool. Keep at it, CF24! ^_^