I saw you originally mention Trivium as one of the metalcore bands looked down on within the genre....and while that may be true, they've got some good material (in my eyes) that's overlooked and undeserving of such negative reactions. In particular, their album In Waves is my favorite of their releases by far. It showed the strongest song-writing and balance that I think they'll ever release (I'm by no means a 'Trivium fan'....In Waves is the only album of theirs that I would recommend or consider to be of any real quality). Just in the case it resonates with you at all, I've posted a small sample of the album with these tracks. You might be repelled by the catchy nature of the choruses (and the vocals definitely aren't the strongest aspect) but I hope you'll find them to be overall pretty well-executed songs. Feel free to disagree completely and let me know what you think! I'm curious more than anything--
(Couldn't get the in-post videos to work, unfortunately. Hope you don't mind following the links!)
https://youtube.com/watch?v=Eq2NYc1E_As
https://youtube.com/watch?v=Swp5t9U0e0U
https://youtube.com/watch?v=FIsMCcWfNk0
https://youtube.com/watch?v=kg6BLlsOcg8