Great to see people into this type of stuff, not just me then. I saw Opeth live when they did Orchid way back when – love the stuff.
Cookie monster vocals come with the territory in this genre, don’t they.
Recommendations – As one person said – Mastadon. I say The Gathering, Dark Tranquillity, Arch Enemy (wife says) and check out My Dying Bride! Ulver, Emperor, Morbid Angel etc.