In my honest opinion, Prodigy was a more interesting read than Legend. The sequel continues with June and Day's protests agains the Republic, but in a more interesting way than Legend did. Prodigy had more twists and turns and a LOT of plot-twists! I ended up surprised by what was going on so often, especially in the last few chapters! There were a lot more events in this book, which actually made it easier to read as well, as it was a lot more action-packed. 
 The ending was not at all what I would have expected it to be! In fact, I'm looking forward to reading Champion, just to see how things play out. 
 As with Legend, I loved the font-and-color change when changing perspectives! It really helped clear things up from a reader's point of view. However, whereas June and Day's characters seemed almost identical in Legend, they start developing more distinct personalities and characters throughout Prodigy, which I enjoyed discovering! 
 However, also like in Legend, I could not get over the fact that Day and June are FIFTEEN (Day turns sixteen in the book). I understand that this novel is supposed to be dystopian, but I can't help but feel that being engaged in an assassination plot at 15 (as well as other huge things that I won't mention because of spoilers) just isn't right. I wish that Marie Lu had made her character a few years older! This is especially apparent when June explains how she finished university at 15 and started at 12, when someone else from the same university was 17 a year before graduating. I understand that the characters are extremely gifted, but I still thing the ages are a bit exaggerated. That's really my biggest rant of the series ^^ 
 Let me know what you thought of Prodigy! :D