Hey mlt.! How are things on "the island?" Still too hot to handle?
I recently had a whiff of Emporio Armani's "White He" and, while I think it is very nice, I think you could do better. The Armani fragrance is very well suited for a young man your age. (Well, I don't KNOW that you're young, but you always refer to your studies. So, I'm assuming that your aren't a GERIATRIC student.)
But the trouble with it is, I don't think it will set you apart from other young men in your social circle. All of the Armanis are nice scents, but they're just so...expected. My advice? Go for the Habit Rouge. It will make you more unique among your crowd. (You were concerned about the vanilla but, f.y.i., the vanilla is very much tempered by the spices and leather on my skin.)
Sorry, but I know nothing about Dior Homme.