A someone else said I disagree with the term black metal for a few of these bands such as: Arcturus (only the first is bm), Ulver (only the first and the third, if you told Garm now that Ulver are a bm band he would roll on the floor laughing), Zyklon (they play death metal not black metal), Mortiis (the guy plays ambient for fuck's sake).
From the list I have to choose Darkthrone, but I believe you have left out the two best black metal band today: Thorns and Dodheimsgard. My vote would go to either of them without any thought. Oh, Satyricon should also be on the list.