haha i don't know about tool fans being few in numbers. i think it has just become a fad to hate on tool, so people moved over to being fanboys for mike patton and hating on tool. soon enough, people will start hating on patton and go be fanboys for someone else haha. anyways, def check out isis. i recommend celestial and oceanic. oceanic is one of my favorite albums. porcupine tree is a bit more poppy sounding for prog rock, but still very solid.

Tool fan! Oh we seem so few. I like Opeth as well - will have to check out Porcupine Tree and Isis....