I haven't really been asking all that mean questions that I want to give a best answer to. I try to form discussions, unless I have an enquiry. Sometimes I think the whole "best answer" system can make people feel like the asker is a favouritist. And then there'll be those who pour their heart into an answer wishing to show their knowledge on a subject, but get shot down.
So all in all, if there's two good answers, I'll just vote 'em up. Don't see the point in the "best answer" system anyway.