I have small hands, so B cups are what I favor. Actually, come to think of it, most of the girls I've been with have been B cups or smaller...
Anyway, loli tits with nothing there are pretty fun, too. I think guys who prefer small breasts do so because when you're able to pretty much reach your hands all the way around a girl it gives them a sense of dominance or masculinity. Thats why little submissive guys go after fat chicks a lot, and bigger masculine guys are seen with tiny little women a lot.
Thats all just speculation though, and I just noticed this was in IB so it was all wasted breath... FUCK.
Honestly, i love big boobs, not too big but enough to be bounced. C cup is good, seeing the cleavage popped out women shirt is something i cannot resist. Lovely!