I like the idea of your thread, but my answer is a group that holds a catagory of their own. TOOL. They are everything you could ask for in a musical band. I know that this is only a reflection of my opinion, but as a listener of TOOL, I feel compeled to share the emotions that run through as I listen to the music that is so well orchastrated. The entrancing vocals and deep riffs are what set them apart from all other bands. They fit into their own catagory, and it can only be left at that.