I know some people that don't like deathcore, but that's because like all of the deathcore bands they've heard are generic bad ones.
Here are two you should look into to.
http://www.youtube.com/watch?v=XDe4kAAbBqQ
http://www.youtube.com/watch?v=dvMplYSUCWY
http://www.youtube.com/watch?v=DEywdQm1x7s