I like the books pretty well. Jim Butcher's skills have grown over time. He's best when he's not crunched by deadlines for both of his series at once.
Here's an incidental: I lived in Chicago and the settings please me.
I have to say that DEAD BEAT is one of his best and contains the best plot-pun I've ever come across.
The cast for the tv series was wonderful, it's true. The adaptations were a bit different from the novels. No harm done, some things gained. Once again SciFi Channel decided stupid was better and canceled a growing concern.