Good ones out there like Opeth and whatnot, but there are so many different different types of death metal out there, there\'s well written melodic metal like Opeth which is a blend of hard and melodic metal, then there\'s pure norse black metal like Immortal, Mayhem and older Satyricon.
There\'s grindcore like Carcass and Napalm Death for example, brutal make\'em hurt metal like Cannibal Corpse which is usually very fast but not at all that satanic, more violent kill\'em rape\'em stuff. Then there\'s the Florida Satanic death metal like Deicide (Incantation playes similar music although their roots lie in NY), and metal like Obituary which blends satanic and brutal metal (I belive the word rotten is mentioned like a gazillion times in their lyrics).
Then the nordic scandinavian metal which I like the most, there\'s fast melodic stuff like Children of Bodom, really different from anything else, pure satanic black metal like Dimmu Borgir, although I don\'t like their new stuff that much. Then the Swedes are pretty active Meshuggah, Taetre and In Flames all good stuff. Hell Meshuggah toured with Tool, and Metallica mentioned they\'d like to be more like them music wise.
There\'s a bunch of other good stuff out there. But if I\'d have to pick an all time fav it would be Opeth, their extreme melodic blend is just supperb