I'll be chicken whistling from now on. They don't feel real. I prefer real ones because there soft and natural. Size doesn't matter. My current girlfriend has small, but firm ones.
Real ones are better.
This other girl had fake boobs and her nipples were not as sensitive. They looked perfect, but felt awful. If I have any inkling a woman's breasts aren't real, I can tell you right now, I don't want anything to do with her. If I was a woman, I certainly would not alter my body in this manner. My girlfriend has a size I bra.