I will admit that I listen to and enjoy Bring me the Horizon now and then, but I also have to admit that they're getting worse. the only post hardcore band I like is Alexisonfire, everything else just sounds terrible to me.
As for metal I prefer melodic metal, like Black Dahlia Murder's Deflorate album (although I like most of their stuff), or In Flames.
I like a bit of everything though, from the aforementioned bands to stuff like Pendulum and Deadmau5. And also Avenged sevenfold, they are probably my favourite overall band right now.