Danny Elfman is one of my favorite superhero composers. While I love the 1990s Flash theme, I gotta vote original with the 1989 Batman theme. Not only because Elfman used it later in the Josstice League(which I certainly didn't mind as someone who unpopularly liked the film), but it was used in Crisis among all Batman-related sequences, including Kevin Conroy's introduction, which was insane to watch as a Batfan.