Personally, I like real boobs, and small ones are fine with me-- especially if they fit the girl's frame. My boobs are smallish and natural, and I would never get big implants. The only way I'd get my boobs done is after kids and if they've become misshapen-- and even then I'd keep them on the smaller side.

The problem as a photographer is, that most of the adult magazines want girls with big boobs. And it's not necessarily the editor's personal preference, but big boobs on the cover just sell more. I've had many a hot girl rejected because of her boob size. It's sad, actually.