Loved the book, it was a very interesting twist on the genre and a unique look into the development of a hero (anti-hero?) Kylar is a memorable character and many of the books characters have a strong impact. The series was better and better as it went on, and the conclusion was both believable and entertaining.
I have also given it to my wife to read (who also loved it) and her sister received it for Christmas and read the whole series in under 2 weeks because it was so good.
Definitely a great read.