I'm a virgin, but if you are too, or not, anyone is welcome to share here.
I think I would like the missionary position best. But doggy-style comes a close second.
Third would have to be anal (but my woman would be receiving).
I think missionary, while a little bit awkward in terms of positioning, just feels more emotional and sentimental. I don't blame people for thinking doggy-style or anal can be more about just getting off, as I feel that way too for those positions.
Guess it always depends on one's mood.
Variety the spice of life though. Even I would get bored of just one all the time.
Note: I don't plan of 'having to' lose my virginity and I won't be fussed if I never do.