For grind I would recommend Dillinger Escape Plan, it's the only grind I can stand.
i miss listening to dillinger escape plan, and no theyre not grindcore in the least ?_?
if you want grind go for pig destroyer, from a second story window, ion dissonance, etc. if you want the weirder grind/noisecore shit then go for holy molar, the locust, head wound city, etc. if you want the older, punkier grindcore/power violence shit then go for fuck on the beach, man is the bastard, charles bronson, etc.
i miss loud music, indie isnt angry enough sometimes
Ah, I see. In the end, though, I think DEP's unique time signatures precludes them from being grindcore in favor of mathcore. Really, I think all these "X"core genres are getting a bit redundant, but whatever.
I'm not a big fan of all of their work, but Young Team - Mogwai is pretty amazing.
And if you like GY!BE i'd definitely get the new Silver Mt. Zion [leaked/torrent/whatever] blindblindblind off of there is amazing.
The only other thing that came to my mind was Battles, but i'm not 100% sure if that's what you're looking for. I have mirroed by them and it's great.