Speaking as a woman, you can't buy cologne because it smells good on someone else. And you can't but one just because it smells good in the bottle. You have to find one that works on you and use it. Sometimes, though, after a while, your chemistry changes (could be the climate, or if your diet changes, or just because...)and you have to find another. And sometimes they change the formula of a cologne and it doesn't work for you anymore. But I can tell you, what smells good on one person doesn't smell good on everyone. Some women will mention it to you (even if they don't know you and without prompting) if you really smell good, or inquire what you are using! Then you know you have found your signature scent.