I don't see how "death metal" is not an adequate description for fucking Opeth. With the exception of some elitist fags, no one really quibbles over Death, Cynic, early Katatonia, Atheist etc. being death metal. So why is it so incorrect for Opeth? I'm not saying all those bands are like Opeth - but they are all similarly removed from death metal and in some cases are less "death metal-esque". The major thing you'd argue about Opeth not being death metal, is the aforementioned elitist argument - that being the music is not a deconstruction of western values. In which case, half the fucking bands on the planet would not be considered "real death metal", which is just plain stupid given what "genre" descriptions are meant to be.