The Burning had the most action of any of the books in the series so far. It also had great descriptions of the Northern Kingdoms, and an incredible encounter with a polar bear! I enjoyed how each owl matures and how their individual personalities start to come through a bit more. I will be interested to see how they will change further and if their relationships with each other will change in the upcoming books of the series.
Pamela Garelick has created a rich collection of voices and gives a spirited narration. It was one of the best audiobooks I have ever heard. This wasn't the best book in the series, I think, but it was a terrific ending. (At least I think it's the end) It was well written, and a great book. I won't say too much, so I don't spoil it. I think if you've finished Ga-Hoole, turn your attention to the Warriors series, by Erin Hunter. Those are longer, and most Lasky fans will enjoy them.