Can someone please hook me up with some Deathspell Omega? It sounds awesome from what you all described it and i checked out the song "First Prayer" which was amazing, on their myspace (lol).
And i can attest to the fact that metalcore can be a gateway into better music. It was because i got into metalcore at the beginning of high school that i've gotten into way better music now at the beginning of college.
However, not all metalcore is bad. I'll admit, most of it is soporiphic drivel, but there are a few gems there, particularly bands like Blood Has Been Shed, Glass Casket, and Beneath the Massacre. Check them out for some good metalcore.