I would think it would go better neutral to female than female to neutral. Or maybe I'm thinking about it wrong. I would rather have what what polys are there stretch to a breast than have a fully modeled breast try and flatten to a male morph for instance. I could be wrong tho ;). Neither is ideal. I think that might be what pjz99 is trying to get at. It's better that the model is made for the shape it's gonna be on. Going either way to far normally doesn't look that great.

Laurie