Up until series 4, Wentworth was excellent. I really liked the way they put a different slant on some of the characters from Prisoner cell block H. Series 5 suffered, because Bea Smith wasn't in it anymore.
I stopped watching it, because many of the characters were not as good as when it first began. Some of the scenes were put in, for the shock factor - Joan cutting the prisoner's tongue out ect. Pamela Rabe is a fantastic actress though.
Out of curiosity, I watched the first episode of the latest series. Things seem to have improved, so I might start watching again.