Such a lovely thread So many choices, I can't even make my mind. I would go for anything that is not tiny or nonexistent as long as it's natural.
Average is best. It can be hard to find the right size ready-made clothes with the right proportions when you're not average.
A real women has REAL BIG BREASTS. What are they for? FEEDING YOUR KIDS. LOGIC SAYS - BIG TITS = BETTER SURVIVAL RATE. BIGGER TITS = I WILL SURVIVE, AND SO WILL MY KIDS.