I chose the option of big, natural breasts but, in fact, that doesn't say it all for me.
Sometimes it's a matter of proportion. A C-cup on a large-boned and/or fleshy model may look too small and unbalanced while the same on a very fine-boned or very slender model may look wonderfully full and just perfect.
I do enjoy full-breasted women. However, I don't feel that the bigger the better is always true. I always look at the entire woman. What does she look like all over? Great looking legs and feet are just about as important to me as breasts, especially in a dancer/stripper.
But all other things about the face, hair, and body being equal between two models, I'll prefer the larger-breasted one.
Enhancements? I usually prefer natural. There are exceptions. A very small-bust (A-cup, for instance) probably needs some enhancement. But, always, it needs to look as natural as possible.
A great example of natural looking enhancement is our Marta. She looks great!