I have a hard time with most of the screaming/"growling" bands as I don't think most of them can pull it off. Most of them sound like they're puking or grunting pigs, and there's the whiny scream that I hate (BMTH "pukes") I get a bit annoyed when I hear a band with great instrumentals and then the awful singer joins in! So I tend to listen to only Instrumental metal or instrumental versions of the songs.
But hey, that's just my opinion!
"Edit" If anyone knows some good instrumental stuff please post it.