"Good - gets better"
I accidentally listened to book 10 first, before I realized it was part of a set. I was a little lost, but realized that I really liked the writing and audio acting. I then searched out and found this book. After listening to it I can tell that it was an earlier effort. Not quite as good with story or acting, but still quite a good book and worth listening to if you like things like magic, demons, and dry wit.