What is your favorite Guerlain parfum and why?

I'm a collector, but I would like to know the reasons why women reach for certain Guerlains.|||I can understand why you collect them ~ they do the prettiest bottles :) I did have a small phase of liking Shalimar in the 80's, but I find most of their perfumes way too overpowering now. Gorgeous bottle though ...http://www.art-deco-style.com/image-file鈥?/a>