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The great thing is they've been quite reinvigorated since Conklin re-joined so there are a couple more recent albums there. All the albums prior to 2011 (bar the debut) have a rather generic growling vocalist. Still some decent music though I suppose.
I actually added that Dark Forest album to my GPlay library the other week, just haven't got around to listening yet. Sounds pretty good, I'll have to bump it up the queue if you rate it highly! It reminds me a bit of a mellower version of Falconer which are an old fave of mine (Swedish folky power metal).
I do (did?) like Amon Amarth, though they're a bit boring these last couple of albums. I'd put them in Viking Metal, not melo-death. :) Omnium don't do much for me.
Moonsorrow I've loved long time, Primordial too though not so much the latest one - Gathering Wilderness has always been my fave album of theirs. Falkenbach I haven't heard in ages but liked. I liked the usual suspects like Ensiferum, Thryfing, Windir, Nokturnal Mortum, Arafel, sort of things on the blacker end of folk/viking scale.
Didn't really get into Thrawsunblat. Saor I haven't heard though I read they're similar to Panopticon who didn't really do it for me.
I grew up with the Norwegian Black (and the Swedish Death), these days though the best stuff is French. Well, basically I'm referring to Deathspell Omega* and their 'avante garde' black metal. :)
Deathspell Omega's concept trilogy masterwork "Si monvmentvm reqvires, circvmspice" (2004), "Fas – Ite, Maledicti, in Ignem Aeternum" (2007), and "Paracletus" (2010) are I think my current 'favourite things ever'. All different, all challenging but all highly rewarding (after many listens plumbing their intricacies).
My favourite Death Metal band overall these days, even though their latest album is not the best and there's been some interesting stuff recently, would still probably be Immolation.
My favourite Metal band, as in they're not really in a strict sub genre (but they kind of get lumped in death/thrash which I suppose is closer than anything else), would be Deceased. Lyrical themes: Death, Zombies, Horror. They have a great zombie concept album, Fearless Undead Machines :)
*and oh my god by creating that link I see they have a new full-length due in just over two weeks...