I listen to post hardcore and metalcore aswell.
If you haven't already, pick up a pair of koss ksc75's.
I know its way underbudget, but they go great with the genre, super comfortable once you bend them to your ear, and personally i prefer them to my $300 headphones.
You won't believe how good they sound for $15.
If you really want to spend more, i'd get the CAL's for home only use, or the M50's for portable/home use.
Are the CALs or M50's by Koss?