There's nothing so deeply personal as one's signature scent.  Your body's chemistry interacts with the scents which are applied to the skin, resulting in a truly unique aromatic experience.  I've sampled perfumes which smell lovely on a sample card, but end up being completely unwearable through the recondite alchemy of personal interaction is enacted.  That being said, I tried this sample bottle of Calvin Klein's Eternity on a whim.  At first whiff, I was put off by the overly chemical composition with a spritz straight out of the bottle. However, once applied to my skin, it lost the overtly chemical smell and assumed a more natural floral scent.  In general, I don't favor perfumes with citrus notes, but this one worked for me. Overall, it's quite pleasant. The reason I've rated this so highly is its longevity.  Too often, one needs to "layer" designer scents with body lotions and then refresh periodically with rollerball applications. I was delighted to find how long this lasted without the need of a refresh.  Four hours later, although the scent was not as strong as when I had first applied it, it was still noticeably present, which is really more than I expect with designer perfumes at this point.  I don't wear a lot of perfume in general, so this size will last me years.  Very pleased with this product!