for the more well known ones ive been loving system of a down recently and slayer, theyre probably two of my most listened at the moment. as for the less well known bands i love human vivisection (945 monthly listeners) and odius mortem (1553 monthly listeners)
Metal bands... hmm SOAD is classic sure, Disturbed, Iron Maiden, Megadeath, Royal Coda, Dance Gavin Dance, Polyphia, Ice Nine Kills, Motionless In White, Rammstein.