If your junk got swapped. . .

So if you had a sex change, or if you somehow woke up tomorrow in the other sex's body, what would your name be? I think if I were a guy, despite being named Chuck now, I'd go by Dave. In high school they used to call me Dave and I think that'd be what I'd go by now. I just have always wondered how transsexuals pick their new names, those who don't go for something similar that is. I'd be Dave. What about you?