It's been a while since I last read a good fantasy book for this age group. The Son of Neptune was probably  the last one that really impressed me, but The Serpent's Shadow just came out so i'm really looking forward to getting myself a copy! I already reached my spending limit for books this month though, so I guess I have to suffer and wait 'til June.  Books like these are really refreshing. I admit that they are my guilty pleasures ;)