Dior Homme. The Armanis are played out, especially Code, and none of them are very interesting. Dior Homme smells gorgeous, intelligent, sophisticated, and smart - all the qualities you want to project at college, no? The gourmand and floral notes give it huge appeal to young women, as well. I've worn it and gotten a number of compliments from the 20-somethings I work with.
(Edit: Just noticed that Armani Code is in your top five. I, er...umm...like I said, it's played out, not bad. I thought it was the greatest scent on earth when I was younger, and I still have a soft spot for it.)