I voted Versatile, but there is a little detail: If i'm in a relationship with a woman, i'll always top (of course, there are the anatomical differences, but i would probably not use toys or anything). If i'm in a relationship with a man, i'll bottom. So, it depends
Switch leaning towards top. Others love it when I top so it seems to be a default thing but I could definitely be willing to be on the bottom.
Eh, with a bio-guys I imagine myself to be mostly dominant with everything, except, erm, the stuff involving... holes... near the legs... >_< With bio-chicks I am also pretty dominant personality-wise, but I think that if I ever got around to that base, I have a 50-50 shot of being either, because ya know... they have a second hole in the front, that erm, is a lot more attractive to me... I mean... >_< I'd probably be down for anything, but regarding that hole both sexes share... I mean, there needs to be condoms and a bunch of... clear smooth liquid-stuff... yeah... *Runs away*