Buy HM EDP or possibly Rochas Man. Neither Fahrenheit nor A*Men are suited for 18 year olds, nor are they ideal for hot weather. HM smells like candied citrus, lemon, mint, melon, and vanilla with a hint of chocolate. It is sensational and one of the best smelling, most unique "designer" scents out there. Rochas Man is simply delicious, delicious, delicious. It smells like, cotton candy, creamy lattes, raspberry, chocolate, vanilla, and cinnamon, but I would go VERY LIGHT on it in hot weather as it is extremely sweet. No more than two sprays of either, man! Don't buy crap like Isse. It's gross and smells tired and boring as hell. There is nothing special I can say for it. If you must choose between Fahrenheit and A*Men without sampling them and at your age, then understand that the first is a dark-light combination of fresh, grassy, aromatic, florals and dark, greasy, petroleum, and the other is a deep, brooding, delicious, chocolate-covered-caramel, patchouli bomb. They are both amazing, but I'm not sure if they'd necessarily be "for you". Good luck, man.