Personally for dubstep I like deeper, more defined, wubs. the wub pattern sounds like you used the same loop over and over again, but if you could vary the pattern of them a bit more then I think this could be a really good dubstep song. As far as trance/ambiant I think you have that down.
Thanks man. Yeh, I haven't figured out how to alter the rhythm of the "wub" as you said it. When I do, I will probably go back and edit it a bit. Cheers for the review :D