What are some good screamo/death metal bands?

What are some good Screamo/Death Metal bands? 'Screamo/Death Metal bands only' No Linkin Park crap!!!

arteyu, avenged sevenfold, marilyn manson, Scary Kids Scaring Kids, Alesana
just some bands I listen to.
hope I helped.

death metal
morbid angel, cannable corpse,deicide, carcass, obituary, six feet under to many to list, but these are some of the best for me
speed metal: these bands are great to start off with especially slayers 'reign in blood'
slayer, old seplutura(pre roots), testament,
thrash: also great bands on all albums they produce
anthrax, megadeth, old metallica(pre'black'),
black:not really into black...but
danzing...all up to danzig 4, skip 5,6, then start again at 7
as always, you must include pantera and black sabbath in all music collections.