I personally prefer pear-shapes--smaller chest, wider hips and thighs. However, I won't knock a piece just because it has a huge chest featured on the character. I even use some large breasted characters in my work.. it just has to be right for the piece. I probably wouldn't put a giant chested woman in a more classical piece, and there's no way I would use a small-chested woman in say, a fantasy pin-up. For me it's about appropriateness, I guess.