From my collection, Cartier Declaration L'Essence and Declaration Cologne are good. My newest fragrance purchase, Azzaro Pour Homme Nighttime is a kinda dark, stuffy citrus that I like I think will be good in the warmer months. I don't own the following 3, but I think they're great citruses for the summer: Hermes Pamplemouse Rose, Francis Kurkdijan's APOM, and Creed's Royal Water (I have an oil version designed to smell just like this, and it does).