I don't say this very often, but damn that was some good animation. I am obviously not talking about the broadcast version, but the dub. The main characters are very well done, though several of the side characters felt a little flat and lacking in fiber. The action scenes were great. The story is one of the best I've seen in an anime in quiet a while. The best part, however, is the pacing. The show is 12 episodes long, and is paced perfectly. After using the first several episodes to set you up, each episode is full of content, and builds on what the previous one did. I used to think that 12-episode series almost always left you lacking, but then I took a Madoka Magica to the brain.
Overall, I would heavily, heavily recommend anyone who watches anime give this a try. It is not something you have seen before, and is worth the watch. Personally, in sheer quality, I would probably put this up there with BeBop, though for different reasons. So, please, go watch it, or Kyubey will find you.