Avatar: the last airbender is a clear 10/10 in my book. Endlessly charming, amazing worldbuilding, a plethora of loveable characters that all undergo truly masterfully executed character development, great animation, and a fantastic score. Really, everything you could ever wish for in a show. No real drawbacks at all except for the first season dragging just a little bit too much. Truly the best animated show of all time, and my personal favourite show. Highly recommended!