SoulSilver, because I wanted the Lugia figurine, and I prefer Lugia over Ho-oh. I'm also more of a "Silver" type of person than a "Gold" type of person. I also prefer "soul" over "heart."
I also have a habit of choosing the "opposite" game. (Blue instead of Red, etc.)
I also would have played as a female in-game, except the hat is extremely ugly.