Well, I think it is difficult to be both these days, but since I have 2 teen DD's, I'll say girls.
First of all, they are more concerned with their looks and accessories, (hair, makeup, jewelry,) so it's more stressful to get dressed.

They are also more fashion and body conscious, and girls suffer more cases of anorexia than boys.
Girls reputations are more easily tarnished. If a girl fools around, she's loose, if a guy fools around, he's popular.
When they start to drive, teen girls seem to take longer to get the hang of it than teen boys.
At a younger age, I think girls are easier to deal with, but during the teen years, boys have got to be easier than girls!!!!
