Tom Ford Grey Vetiver is along the Vetiver Babylone line, and lasts quite a while for me (8 hours). One of the best in it's class IMO. However, I don't have a problem with the longevity of Vetiver Babylone either.
Original Vetiver is pretty light on the vetiver and longevity, but smells excellent. Vetiver Veritas lasts all day, but may not be what you are looking for - it is a much stronger/harsher vetiver scent (but certainly worth a try if you love vetiver).