Personally I can't stand Dream Theater. I don't like power metal. I do like progressive death metal, like Opeth & Ihsahn. The black metal I like includes Belphagor, Behemoth, & Abigail Williams. For thrash, I dig Havok, old-school Metallica & Megadeth, Witchery (yeah, they got death vocals, but their instrumental is straight thrash), Max Cavalera-era Sepultura. Christian Death did a side project that was metal, you've probably heard them if you're into old-school goth at all. The Lover of Sin album is pretty sick, a female vocalist over black/thrash instrumental. Dark shit. And then there's Acid Bath, who are fucking amazing and only ever put out two albums, then their bassist died & they broke up, & Sammy (the guitarist) went to Goatwhore while Dax Riggs (the vocalist) continued to do his own solo thing, really bluesy goth stuff which is actually pretty good. But none of it comes close to what they accomplished with Acid Bath. My favorite metal video of all time is from Behemoth, though, a blackened death metal band: