I'm fascinated to some extent about the power of scents, and I've already written a little about it.
Currently I'm using Acqua di Gioia described as "a clean, incredibly fresh, aquatic scent that is ultra-approchable, yet memorable. Feautres crushed mint, pink pepper, brown sugar and aquatic jasmine to capture the essence of "Joy". "
I've been told to never change my scent. However, according to an article I just read in di.se, it's encourages us to have a wardrobe of scents, 2 for work and 3 for private occasions. Apparently, head positions are associated with spicy smells, whereas if you want to be popular at work - go with Vanilla.
If you want to find out more, here's a blog specialized in the subject.