Good question, bottom for me, the only experience ive had is with girls and of course ive always been top, so i would like to experience bottom, if i want top i can get that from any girl so why would i bother with a tgirl it just misses the whole point for me.
I cant understand guys who say they just want to be on top, why miss out using that lovely cock! you might as well just have a normal girl.
Having said that i want both as well because i want to experience everything she has to offer, one of my fave fantasies is to have her stand up while i fuck her arse and wank her lovely cock in my hand at the same time, but bottom is most important and my first choice.
I need a shecock desperately!