I have all their stuff and have heard them many times.A Blaze in the Northern Sky was the first one I bought and it's very cool.But the ones I still listen to the most are "Hate Them" and "Total Death" all their stuff is cool though but a few can get stale if played too often,like Transilvanian Hunger and Goatlord although the styles on those two albums are almost opposite.I like the new direction they're taking with the F.O.A.D. release as well,but to anyone I would suggest Hate Them and Total Death,those two seem to have the most staying power,maybe Under A funeral Moon as the third one followed by Ravishing Grimness.Hope that's helpful