Cool Water could be the most popular fragrance ever. I have no reason to tell you how it smells like, because there are so many other reviews.
All I am going to say is, buy the smaller bottles. With anything large, you are taking a chance for reduced longevity. Many other people said that the larger bottles do not have as much longevity. The smaller bottles seem more concentrated; therefore, I would stick with them.
Furthermore, I feel as though there is a slight difference in smell with every bottle of Cool Water. Davidoff needs to confront this issue. Many other said the same thing. I can use a test spray at Dillards, then use a test spary a Macy's, and I notice both smell different.
Try to get your hands the older versions of Cool Water if you can.