Lord of The Rings or Harry Potter?Watch
In terms of the movies, I would say the LOTR extended edition movies pretty much nailed the fantasy genre, but the Hobbit films are less convincing than the Potter series.
Harry Potter does have the negative of copying a lot from Lord of the rings though.
I just prefer Tolkien over JK Rowling. However I also think they are many logical reasons as to why LOTR is better but I just can't name them all.