All four have their appeal with me. I am a men and have had gay sex. I have been dominated by a man and a women and I have been a dom to a man and a women...I have had 2 partners in my life. 1 man, 1 women. I am bisexual but I "lean" towards sex with women. Women are my preference but at the same time I do enjoy fooling around with a guy.
I think being spanking by a man, for me, has a different psychological effect on me. Not better, not worse, just different and appealing. Same thing when I spank a man.