I only really listen to two bands from Israel and they are both fantastic. However, Melechesh easily gets the nod due to their much more aggressive style of metal. The black/death/thrash metal band is easily one of my overall favorite bands. Their take on metal, adding in Middle Eastern melodies and scales, is extremely well-done and impressive. I only own their last three albums, but they are all absolutely amazing. Even though Melechesh no longer resides in Israel, they got their start there and that is good enough for me.