Brains Base, if you want to keep that position as best studio you best be making a second season this Autumn.
Seriously though, this is exactly why I think Brains Base is the best studio. I've read the way Narita writes(though little , and while they do a fantastic job transferring that part to the screen, they don't just make a copy and paste job of it. Compare, say, a Bones adaptation, where while it may be good, they usually add little more than color, music, and voice acting to the show. They lift it visually straight from the source, and they don't really add much to the show. Sure, this Brotherhood show is pretty awesome, but why don't I just go read the manga?
Brains Base, by comparison, takes source material and does stuff with it. The use of connections in the Durarara!! stuff, for instance, is pretty spectacular. I can't remember a time where I've seen something in another show like it where we have that magnificent scene where all of the people normally colored grey gain color like in Durarara!! Baccano! manages to use anachronic order despite the light novels not being told with it, and still manages to keep consistency and do a fantastic job of wrapping up three removed storylines in one finale while slowly revealing information.
I was, however, a bit disappointed that when Shizuo first began his attack on Izaya he didn't throw the vending machine right next to him.