Well, I finally have to tell my opinion as well.
From my own experience I can only tell, that there is no such thing as a preference for me. My partners were both overweight and slim, but they ALWAYS were beautiful. For the time being I prefere small tits, in former times I preferred larger ones. So I'm not even able to tell you what "beauty" means to me. Of course there are poeple out there which make me turn my head. But I always find it amusing how different they look. I still haven't found out what it is that makes me look twice. But it's definitely not waht is called the "perfect" look. Most of the times it's right that, that makes me look away.