I'm more a fan of the "Sludge""doom" or the unfortunately named "stoner metal" that has risen in popularity with some. with the Stoner variety, you have a song structure that can be minimal yet lengthy and psychedelic while using a mainly blues influenced scale. Language never bothered me as I feel the musicality of the language only adds to the sounds character. For example; Boris. A Japanese Doom/ noise/ rock band, singing almost exclusively in their native language, yet never lacking in their delivery of aggression or malice.