My absolute favorite YA Dystopian is X-isle by Steve Augarde. After a flood destroys most of the world, boys are called to work on X Isle. This is the tale of what really happens there. It is the type of book that sucks you in immediately and keeps you enthralled until the last page. What I liked so much about it, and what makes it stand apart from others, is that is does seem to have its roots firmly is classics such as The Lord of the Flies, which, somehow, makes it all that more chilling to remember authors were writing like this half a century ago, too. This is one I would definitely recommend as it was in my Top 5 for 2010.