I choose looks. A deep voice has nothing to do with attraction it's just a trivial plus if he does I guess but I don't really care how his voice sounds. If worse comes to worse and he sounds like Mickey Mouse all you have to do is not talk. That's perfect for me because I don't like people distrupting my thinking. Or you could duck tape his mouth and that's way better than having to put a bag over his head.
I can't say I agree. I think looks are more attractive then a persons voice. I have met very few guys with "deep" voices but it never drew me to them. I have never heard something like this before. Where did you hear it?