It depends on the chemistry I have with whomever I'm with. I can cum very easily having my man on top of me in missionary because of the access to my g-spot and I like that if the person I'm with is in to dirty talk so I can whisper things in his ear. Otherwise, I'd rather be flipped over and pounded in doggy style with lots of hair-pulling, smacking and aggression.
Sexually I'm experimental, I've dabbled in all kinds of kinks and fetishes, but at the end of the day, good communication and a natural lust makes everything the hottest.