As one who enjoys quite a bit of metal (mostly thrash and true death metal from the 80s/90s) I do think the SR-007 (with BH) are one of the few headphones that can play at soft, medium or high volume with those genres without making everything sound like mush. There is a crapload of stuff going in those styles of metal, from really fast guitar and bass playing, blast beat drumming a lot of headphones will make the music sound like a big wall of sound. So I can understand where Birgir is coming from. I do look forward to hearing the 009 for myself one day (and maybe even on a DIY T2!)