The audio version is spectacularly good.  I listened to all but the last few chapters, then read those last chapters on an iPad, then listened to them on CD.  The narration adds a lot.  The story is riveting. It's full of surprises.  But the narration really adds another dimension.  I enjoyed the first two books, and I wondered if the third could measure up.  No need to worry. Just like we are still reading Charles Dickens, in 200 years they will still be reading Allegiant.  It's not flawless, but it's awesome. 

Question: Why were the people angry at the release of the novel by Martin?
Answer: The audio version is spectacularly good