Lamb Of God, original? They sound a lot like Pantera to me. I'm incredibly picky when it comes to metal as I find most of it is very samey. Trivium are one of those bands that I find are oh so interchangable with their peers. Bullet For My Valentine are another. Dillinger Escape Plan are clearly the saviours of metal (if indeed, it needs saving). Other recent bands of note are Meshuggah, Norma Jean (pretty much the only 'fashion' band I can stomach) and God Forbid are the pick of the Maiden wannabes.