chrisdoig24k
Boom King
Check out Agalloch's The Mantle and Pale Folklore. Its great folk and ambient stuff.
Let's not forget Ashes Against The Grain!
Since you're into Opeth, I'll make you some recs:
Ikuinen Kaamos - The Forlorn. Great, melodic, melancholic, progressive and beautiful death/black from Finland. Quite like Opeth, except a little more black metal.
Ne Obliviscaris - The Aurora Veil. Single best demo in the entire existence of the universe. No genre can do justice to these guys, but at a pinch, you could say progressive black metal with a violin. Except it's a million times better than that makes it sound. Much the same with Ikuinen Kaamos.
Trivium - Ascendency. Revolutionized modern metal. Just joking, lulz, but get the other two above albums! And Agalloch's 'Ashes Against The Grain'!