Try Chanel Platinum Egoiste and Paco Rabanne XS Pour Homme if u want something similar to Eternity. They have they same fresh vibe but are different enough to stand apart. U will get some similarities here n there in the notes and they are less commonly worn compared to Eternity. Personally I prefer XS and Platinum over Eternity.

Davidoff Cool Water is quite good IMO. But it is one of the most commonly worn fragrances together with Aqua di Gio so son't expect to stand out wearing CW. Also expect comments like "U smell like my ex" and "Bro why u go buy CW for ? Now we smell the same la". CW is one of the most copied smells around and even Glade has a Cool Water clone for the room and car
But i have no qualms about wearing CW though as I love it.