I personally prefere Obama, I like the way he thinks about certain things. Clinton on the other hand, I don't care what anyone says about her break-down, but that wouldn't really be a plus for anyone. Not to be sexist, but I really don't think the U.S. is ready for a woman president. Maybe in the future and I think it will happen soon or later, but I really think Obama will come out on top.
Notice America is more focused on Obama and Clinton, sure Obama is the first African American and Clinton the first woman but I think when comes down to it, America will go for Obama. (If this makes any sense, and if it doesn't I apologize, not on the ball at all today.)