[Akurei]

I guess I prefer some sort of sense of reaction to the change. Not always smug, though, it can be shocked, upset, surprised, etc depending on the situation, but it's nice to see the person react to the change. Also a sign of the change is a big plus. It's rather crude to just have little then big without showing that change. Finally, realism. I'm not sure if anyone else agrees with me, but there is such a thing as "too big" for me. When the breasts get so large they either detract from the figure of the girl in question or just get to the point of sheer ridiculousness, that's where I draw the line.