Looks like subs for this have (finally) hit the interwebs. One of my favorite anime of the last few years.
As for the anime, S1 is regarded as better than S2. By how much better S1 > S2 is a matter of personal opinion, and actually quite contentious. I found S1 superior to S2, yes, but S2 is still quite great and stands solidly on its own but for being in the shadow of S1 which is amazing.
For viewing order S1 --> S2 --> Movie