I don't like growling vocals. I however can appreciate their occasional use in a song, when used to create a certain desired effect or mood, most usually a sense a darkness/evilness or anger. The problem arises when the the entire song is sung in growling vocals, and when you really want to express darkness, anger or evilness, you carn't. That, and growling to my ears does not sound very nice, so i can only really take it in small doses. Being a metal fan, my dislike for growling vocals is rather problematic.
I like.. normal-style singing, a bit of screaming here and there to create a suitable effect, perhaps a bit of operatic style in there as well. Rather like what Bruce Dickinson does-