After reading some terrible, pedestrian work on this site, I was pleasantly surprised by this book. The characters are unique and interesting, with compelling, witty, dialogue.
All the characters have a distinctive voice. I enjoyed the juxtaposition of the stereotypical angel/demon dynamic, especially the reversal of typical speech and syntax. I'm only half done but I've flown through this lengthy work. The only thing I don't like is that the author doesn't have more books published.