How heavy is heavy? Usually what I’d consider the ultra-heavy stuff comes with the growls as a matter of course–which is unfortunate; a lot of the stuff is beautiful, but many folks who might otherwise listen can’t get over the vox. But then, the folks making black and death seem to pride themselves on being deliberately inaccessible.
I also second Lord Ashtar’s comment: If you like the music, you’ll get to where you can at least tolerate the vocals. You might even start to think of certain vocalists as ‘better’ or ‘worse!’ I very nearly dismissed black metal when I first heard it, due to the harsh vocals–but I came to accept them eventually. Ideally they should be back in the mix, so as to contribute to the song/atmosphere without distracting overmuch, IMO–they’re still not exactly -pleasant-.
Kyuss: I’ve only one album, Blues for the Red Sun, but it’s solid, heavy, sludgy metal in the tradition of Black Sabbath. Vox are uniformly clean, IIRC.
Acid Bath: Southern sludgy metal. Some harsh vox, but some gorgeous clean stuff, and killer melodies throughout. I think these guys have went on to become the very harsh black metal band, Goatwhore.
Arcturus: A supergroup that’s had Garm of Ulver and Simen Vortex of Dimmu Borgir as vocalists in their history. Their first album had harsh vox; the rest have been clean. They peaked, IMO, on their second album, La Masquerade Infernal, but some may disagree and the later albums do have their fans.
Bathory: The fathers of viking metal (and one of the fathers of black, too). Hammerheart is the album to go for here, IMO. Gritty but clean vocals. Vocals were harsh on the prior album, and entirely clean on the following–unfortunately, Quorthon isn’t that good a singer.
Borknagar: I think these guys have used clean vox throughout their career. I might be wrong. Never got heavily into them, but they’re pretty good.
Bronx Casket Co.: A side project of a fellow from Anthrax, I think, these guys are the band Type O Negative wish they could be. Heavy gothic-tinged metal with clean vox throughout.
Green Carnation: Authors of perhaps the finest moment in metal, the sixty-minute epic, “Light of Day, Day of Darkness.” Nothing I say can do that album justice. Since then, they’ve kinda wandered into ever proggier territory and I’ve not kept up with them.
In the Woods…: In the same vein as Green Carnation, or rather, Green Carnation followed in their footsteps. Their first album included vocals so harsh that I’ve never listened to it from start to finish, but Omnio and Strange in Stereo are both superb, although definitely in left field and maybe not ‘heavy’ enough for you.
Pelican: Very heavy. No vocals at all; dunno if you’d dig that.
Rakoth: A band from Russia that so far as I know, have faded into even greater obscurity than that which they started. Mix of clean and harsh vocals, but beautiful melodies throughout. Some rather unintentionally comic themes, such as songs about the Drow. :rolleyes: Look for Planeshift and Jabberworks; I can’t vouch for their third or later albums.
Skyclad: Folk-tinged thrash, a bit heavy on the puns. ("…she led me to that place where cunning lingers…" for example…) Not sure of their current status, but they have a number of excellent discs.
So, there’s what a brief (and alphabetical) glance through my collection yields. Hope you find some good tunes in there. 