I like disturbed's music, but I cannot agree to the best rock band ever. There is no such thing as the best (insert genre here) band ever. Never has been, never will be, as it's purely opinion based. I think, at this point, this case can be closed.

Disturbed is part of the worst branch of metal, Nu-Metal, not rock. They are very overrated and fail. They are not the best Rock band ever. Van Halen or Jimi Hendrix, those are the best Rock bands. And also, since they are metal, still, Metallica, Iron Maiden, Megadeth, Black Sabbath, Etc. still are better than them ;)