If you like this, be SURE to check out Meshuggah, particularly the album Destroy Erase, Improve. Same sort of style with better vocals, tricky polyrhythms (which make it more interesting) and a better guitar sound. Those guys have the Machine-sound down pat. I guarantee you will like them better than Fear Factory unless the rhythm's are too complex and it goes over you're head. But that won't happen, right? :)