This book is a bit special to me because it was recommended VERY enthusiastically by my seventh grade students. I like to read what they read, because 1) it's fun and 2) I generally enjoy YA fiction (who doesn't?). I was really pleased with this book, though not entirely enthralled. I think it follows up the Hunger Games hype nicely, and it's easy to see why people who liked that series enjoy this one. 
 My main grievance is that the narrative between the two different characters sounds pretty similar. If June wasn't so obviously analytical, she and Day would sound almost identical. This gets better and less noticeable by the second book. At times, the narrative feels sparse, but I appreciate Marie Lu because she eventually gives you the whole picture if you're patient. 
 This novel is fast-paced and fairly easy to read. I like the scientific ties and justifications made by the author - it makes everything seem more plausible. I think it's interesting how this dystopian society parallels current societies in our world. I also LOVE that June is a smart, math-oriented character who is also female. She reminded me of Hermione Granger in all the best ways. Day, on the other hand, is a little bit harder for me to understand and relate to. He doesn't seem as unique as June. Again, that gets better by the second book. In my opinion, the society and background created by Marie Lu is believable and interesting. I liked experiencing it alongside the characters. 
 All in all, very good, interesting sci-fi/dystopian read. I'm enjoying the second novel and am looking forward to beginning the third!