I suggest "Immortal"
Good ol' Black/Epic metal.I tryed getting into opeth myself but fell asleep in the process.Then I heard they were "pop" so that ruined it completley.Thats a blind assumption but I steer clear of music that has a questionable integrity."Nu-Metal" e.c.t.
I wont start a rant.. so in closing
Immortal is "intelligent" black/epic metal constructed well,with a unique sound of there own.The drummer is amazing and the songs and lyrics are crafted with thought.
I even think "tool"(it makes me sick to see them recognized as a non mainstream band with talent/skill...I hate them with a passion...well..my ex loved them so that may have somthing to do with it.)got alot of there rhythmic ideas from "immortal"...just listen to "beyond the northern waves". Later!
Try once,fail twice...