This is easily my favorite series of books so far, especially in the dystopian genre. 
 The whole thing was a roller coaster for me. I might have mixed feelings about the closure with some of the characters, and I would have liked to know more about some character's fate after all - like Grace, Bam or Argent. But anyway it was a great ending for me, slightly open. That last page though!!! 
 I'm willing to read the Unbound short stories to see if I'll get some of the information I feel I'm missing. 
 Either way, an amazing book and an amazing series!