Deathcore bands that blend other genres in their music can do some pretty cool stuff, like Between the Buried and Me (I listened to "Colors" easily over 1000 times in 2008).
Absolutely love "Awaken the Dreamers" by All Shall Perish too. The musicianship of technical death metal combined with the grooves of deathcore and a kind of melo-death melodicism at times makes for a much more interesting sound than bands like Emmure, Oceano etc.
I like "The New Reign" from Born of Osiris a lot and The Red Chord has some cool stuff as well.
I think the genre in general seems to get a bit too much hate from people who hear some mediocre local deathcore band, or a record of the bands of that rely too heavily on breakdowns and assume the whole genre is bad.
Unfortunately, until there are more bands in the genre that take the good parts about deathcore (the groove and the aggression) and really be creative with it, because the genre has heaps of potential, but most people just aren't creative and interesting enough to exploit that potential.