I own Armani Eau Pour Homme and get nice longevity from it. It is subtle but pleasing for more than 6 hours on me. It fits nicely in the classic citrus category, and I chose it over Eau Sauvage, but that is a matter of taste for each person to choose.
I also like Versace L'Homme but this one is not really a classic citrus, even though it starts with some at the top. Insane longevity and the drydown is one of my favorites.