This Californian band's first iteration lasted a decade, until 1997 (they are now reunited and working on new music, who's quality is yet to be tested). During that decade they released four albums, with a clear difference between the first two and the latter two. Those two first album, and the debut especially, are masterclasses in progressive metal and represent to this day some of the best actualization of why progressive metal is great. They are technical but furiously aggressive, drawing from the pools of progressive rock and thrash equally. The result is two fantastically deep albums with the first being a timeless classic which has sadly gone forgotten.