I'm 10 episodes in thus far and loving it! My only complaint is that I get the impression the first half of the anime is build-up because I get the feeling nothing has actually happened yet, that we're only getting to know the characters. (Shizuo is hilarious btw)
I have the dual audio version and have switched to the dub a few times during both funny and serious moments, but I haven't a very good impression of it. I'm glad to see my hypothesis that the story won't "pick up" until the second half was spot on. So far I really like Shizuo's character and feel like he's (at the very least) going to become great friends with Celty. What is this you're saying about a second season? Are new episodes going to be coming out...? Edit: after looking it up on MAL, it looks as if I started watching this at just the right time~!