A new Youtube video is asking who is the best singer in the world: Bruce Dickinson or Axl Rose?

“Editing this video was painful as I had to leave out so much phenomenal material,” said the fan known as One Man Mambo.

The footage compares Dickinson and Rose since 1981.

The 15-minute video can be seen at http://youtu.be/ly4v-AJDPQM