I am giving Morbid Angel my first listen. Starting with Altars of Madness. It holds up pretty well, I guess.
I heard great things about their lead guitarist, though so far it seems like his soloing is less good in the sense of being catchy and unique and more good in the sense of "what exactly in the fucking fuck is he playing there."
Also, it makes me wonder why all those deathcore bands try and sound heavy by playing lots of breakdowns, when they could sound like this instead.