So, i've been PvPing as frost most of the time, tried unholy and i liked it but it didn't have the same burst damage at all as with frost DW. Killing machine+ Obliterate does insane critts while unholy is more about dots and passive dmg. Nothing wrong with that, but i think frost is more fun.
but anyway, What do you as a Death Knight PvP with right now? I realy appreciate opinions and tips about it