Obsession is one of those evergreen scents that always seems to impress.  I first used this almost 20 years ago and it impressed back then.  Since that time I have used a variety of different scents and even some from Calvin Klein.  The newer scents seem to be getting lighter and lighter When I got the opportunity to try Obsession again it made me realize how potent this scent is.  One spray is enough to last me whereas some of the newer scents like CK Be seem to require 2-3 sprays and even then are lighter and don't seem to last the whole day.  This is a great classic scent with only one downside... the price is on the high side for this quantity.  Nearly $40 dollars for one oz. is pretty steep.  Most of the newer scents come in sets with a 3.4 oz. bottle and other goodies like aftershave for less than $80.