The Black Rock Shooter noitaminA anime was absolutely terrible and I hated it. If I go to my deathbed believing one thing, it is that the OVA was superior in every way. Every way except one. I made so much noise when the first episode ED played and it was the actual song. It was the one thing I had that made me happy when I was watching this miserable excuse for a show. I was always disappointed that the OVA didn’t feature the song outside of an OST motif.
Other than that though the OVA is much better.