I only stayed to watch the new stuff. I thought of the dubs (ignoring plot and things like that so far), Casshern was better done. That might be of course due to the smaller cast they're working with, but I was really impressed with Casshern's voice actors. Braiking Boss needs a little work, but it's not like he's bad. Just not as good as the rest of the others.
Deadman Wonderland was average. Ganta's voice was a little bit shrieky and whiny, which is expected this early on. I'm hoping the VA will drop a little bass later on as Ganta matures in the story. Yo's voice was terrible, but I'm hoping that's an affectation done and his real voice will be better. Makina was the best one there. Shiro was okay, Woodpecker song was terrible. I can't stress that enough.