As far as what's more popular, I'd say large would win. But my personal preference would be natural - large or small, as long as they're real (or at least look natural). I've known and seen some extremely sexy girls who had really small breasts. And I've known some girls with large breasts who were also very sexy. But the only time that I've been turned off by the sight of a girl's breasts (to the point that I couldn't go any further) was with a girl who had really gross looking scars from a bad boob job. I know the look on my face said it all when I saw them - and it really hurt her feelings. But the scars really did gross me out. IMO, however big they were before would have been better than what she ended up with.
Two opposites that I can think of would be Meggan Mallone and Danielle. Before Meggan got the boob job, I thought she was incredibly sexy (probably an A cup?). What she's had done isn't gross or anything, but they look somewhat odd to me... not natural. Danielle is every bit as sexy as Meggan was, but I think it's because her boobs are not just large, but have that natural shape and slope that I find to be so attractive. Another thing about Danielle is her large areolas. More so than breast size, I'm turned on by erect nipples (how's Lia these days?
) and large areolas.
