Emperor, hands down, although their name is mispelled on the poll. Darkthrone is great but still sounds like trash 15 years later (one could contest tis the "true black metal way"). Burzum is almost black metal for Euronymous' death, rather than Varg's later atmospheric releases. Mayhem is and always will be a major part of Black Metal, but people mainly focus on what they have done in the past, rather than what they are doing now (even though all the current members are well established musicians outside of the band). Immortal, while always dead on with their music, their image is hysterical and you can't laugh at something " so evil." So that leaves us with Emperor, who seemingly redefined the genre with every one of their major releases. In The Nightside Eclipse, Anthems and IX Equilibrium are all amazing works, even if they do tend to swing away from BM near the end. What other black metal act could disband and return as headliners of Wacken?