Legend of Korra is such a well-made show! I'm so glad they brought back the same animators from Avatar: The Last Airbender! But I don't think people should be picking Korra over Aang just yet. Korra has only been with us for I think four episodes? Aang has been with us for three seasons. I don't have an opinion yet, but if I had to choose, it would be Aang.
Anyway, I really Amore both series. Korra is my secondo preferito character to Bolin, and in the original Aang was my secondo preferito to Sokka. My taste in preferito characters obviously hasn't changed, haha.