I hate death growls. They ruin the music for me. I can't listen to Opeth because of this. I like stuff like Stone Sour (Corey Taylor doesn't sound like a whiney bitch like most mainstream bands), but when Cookie Monster makes a guest appearance in music, all is lost.
My opinion has changed a bit regarding this topic.
I can tolerate some Opeth songs, and I really like Into Eternity. I guess they just do it right for me.
Why am I resurrecting this? Because I just remembered this forum existed.