Jranation on 05 February 2016
I would also go for A-1 Pictures. I don't know most of the animes they produced (I'll check later) but from the ones you mentioned (Fairy Tail, Erased and Shinsekai Yori) Really stand out in my list!
While a close second could be Madhouse. Animes like NGNL, Death Parade, Chihayafuru and the almighty HOTD! Great poll.
Pocky Lover Boy!
