It's your lucky day I'm a cologne connoisseur. The cologne you choose will always come down to the situation it is for and the time of the year. For instance my favorite evening scent/winter scent is Ralph Lauren Romance. My current everyday cologne for summer is Bvlgari BLV. Another good evening scent would be Gucci Envy. Dreamer by Versace is a sweeter cologne and is very versatile. Acqua di Gio by Giorgio Armani is a little strong for me but it is one that I wear from time to time. Tiffany by Tiffany is a good all-around for most seasons and occasions. Ocean Pacific by Ocean Pacific is a wonderful summer scent, which I need to buy more of because I am out.
I have many more that I use but in the interest of time I will stick with those above.