Having just finished this second book in the Lucifer series, I am still not disappointed. The follow-up to 'Devil in the Gateway' (which I also highly recommend) gives us an increasingly cool Lucifer who now is facing the wrath of Heaven's all angels. As is expected, really...
Children and Monsters is even better and bigger, and Lucifer is calculating and totally unpredictable. In my personal view, the graphics are better in 'Devil in the Gateway'.
If you haven't done so already, I would suggest reading The Sandman series by Gaiman, which is where the character Lucifer is first introduced. In my opinion, Carey does a fantastic job in taking on Lucifer in this spin-off series. He writes beautifully compelling stories. You shouldn't be disappointed.