One of my favorite books that I read last year was Variant, by Robison Wells. Variant is a dystopic YA novel with a Lord of the Flies type feel, but much more enjoyable. If you're a fan of dystopia you'll want to read it.
I definitely want to try and win a copy of an ARC for the sequel, Feedback. If you'd like to have a chance to win a copy too, you'll want to enter the contest Rob is hosting on his blog.
If you would like to check out my review of his book (I posted a few months ago) then check out my blog post about Variant.