Don't buy anything blind without testing first, unless you really don't mind spending lots of $
I'd recommend you buy samples from http://www.theperfumedcourt.com and test out things which interest you.
If you just want to go the Sephora route, try Thierry Mugler Cologne and Gendarme
Younger ladies seem to like the smell of Abercrombie Fierce, so if you're trying to impress girls...
If money really is no object and you want a beautiful lemon rind smelling cologne for summer, Czech & Speake Neroli http://www.basenotes.net/ID26122277.html