I mean both the general question if you go for a nice looking person or for the person who seems to have a nice attitude and looks at you with a big smile. I definitely go for the big smile, for me the looks are of inferior importance!
If I only get one or the other I'm definitely going to take A for the simple fact that without both, it already doomed to fail. So gimme the sexual satisfaction while there is still any satisfaction to be had in choosing one over the other.
Most girls will go for the outgoing, happy, smiling guy. Even if you're above average, you won't get as much attention if you act like a wallpaper unless you are REALLY attractive.
My brother is the outgoing, happy, carefree, smiling guy. He's goofy. He's had no issues with women, girls respond to him very well. Me on the other hand? I'm guarded, less open. It intimidates women. Women want to feel safe.
Looks is always first for me. It's the least meaningful trait to me but it's always the first disqualifier. Otherwise there's just too many people to choose from. So in terms of what I care about its least important. In terms of how helpful of a deciding factor it is it's my most important.