as i posted in another thread, who really cares about the riff ripping off thing, every band has stolen a riff or 2 as there is no original riffs really. its all about interpertation, i mean ya they also did the mirror sounding riff on V but it works so who cares? and DT surely has a few tool sounding riffs, but i think its cool to see someone else's take on a similar sound. but thats me