Allegiant

logical ending? yes. the ending I wanted? no. it wasn't a bad book, but not what I wanted. it felt detached from the rest of the series. I hate to say it, but I wish I stopped reading after book two.

Update: 5 days later.
I wasn't happy with the end. I know I wasn't the only one. I thought somewhere Veronica Roth would explain WHY she gave it that ending. I wasn't happy with her response either. She said she always intended for Tris to die. Maybe that was true, but I think there is another more important reason she never addressed. Readers loved Four. I loved him too. I found myself unattached to Tris and instead eagerly awaiting the next time she saw Four. The third book felt less about Tris and more about Tobias. The last few chapters and an entire book dedicated to Four solidify my theory that Roth changed mid stream. It became more about overcoming the trauma of childhood, than Tris' need to save the world.