I found, fell in love, and had a torrid affair with Acqua di Parma at an expensive ski resort in Colorado. Staying there on business, lots of dress-up required, and I realized I left all fragrance at home. The situation was too nice and dressy to pull my usual "forgot to pack fragrance" trick, which is to buy a magazine with lots of scent strip samples and wear them instead. [Really, not a bad trick, especially if you're on a tight budget - though you have to get used to the idea that it's highly likely you'll end up smelling like "this year's molecule" from one of the big fragrance industrial manufacturers.] So I went to the very cool, very old-money, dripping with class boutique in the chi chi resort, and said, "I want a fragrance that's classic, something that makes me smell like a stuffy old man." The knowledgable sales associate recommended Acqua di Parma. From here to eternity I will always remember the rarified atmosphere of that dreamy resort, the beautiful Colorado weather, the "I'm in a chic Hitchcock movie" feel of it all, and Acqua di Parma -- the scent always brings it back.
So yes, buy it in a place like that. Ha. And if you aren't finding yourself conveniently in that situation, try a good department store. In any case, try to save your initial impressions for wear in a similarly memorable time and place. Old-school luxury goes very well with this classic scent. It's so beautiful. . . hard to forget. . .