Hmmmm. Ok for me it's different depending on the dom/me or sub that I am interacting with.
When I am submissive to men, I tend to read the Dom, and act accordingly. If he is strict and severe, I get more submissive. If he is playfully dominant and nurturing, I get more like a little girl. I prefer the harsher, stricter and (hopefully) sadistic dominant myself, although I would expect reassurance and warmth from him at times.
When I am submissive to women, I read the domme (just as I do with men) but curiously, I have a much harder time reading the women who top me. I am not sure why that is. With women I prefer a balance; Harsh then gentle, teasing and cooing then getting harsh again.
When I domme a man, I prefer to domme a very masculine man. I want to feel as if I have a caged tiger that could explode on me at any second. I like to tie him up and then tease him until he is practically breaking out of his bonds in an attempt to cum. (and if it is a man who is into pain...well, we REALLY have something boiling here!) *grins*
When I domme a sissy boy, I like to be nurturing yet create the humiliation scenes if he craves that. For me...sissy boys are like playing dress up with a girlfriend. (with cbt thrown into the mix)
When I domme femaies, I can go either way with them. I read them and determine what their kink is. We just "flow" from there. I don't really have a preference.