OK - Having just finished watching the second episode in the new run, I think I'm justified in saying that this has to be the best series yet. I had absolutely no idea which way the episode was going to go (a common trait with this series), and although you begin to piece things together, you never actually know how they're gonna get to the conclusion, that is assuming that there will be a nice conclusion, and that everyone will get there in one piece.
It's a show which isn't afraid of pulling the punches (stabbings, shootings or any other kind of dispatch method available to a crazed killer), but a strong stomach is required for some parts. However, it is a show which is very intelligent in its storylines, and the characters have enough depth to them to make you wonder how the writers managed to do this alongside a storyline. Plus the realism is enough to send you screaming for the teddybear you've had since you were a baby (I know it's around here somewhere....)