Arlow: Shadows fall is pretty good. I've been listening to All That Remains recently. The album i have is "this darkened heart" I like them a lot, although its a little too much screaming at times.
Spineshank is another band that I have been listening to as of late. Their ablum "Self Destructive Pattern" is amazing.
I saw Killswitch Engage last fall, and they are one of the more popular metalcore bands.