I think I'm one of the few in here who likes La Petite Robe Noire (only the parfum and the new version, the toilette one has zero staying power and is really delicate), lol. L'Heure Bleue is truly a wonderful classic perfume. Insolence is nice too, but I agree with Dominique about it. I don't like Shalimar or any of its flankers unless it's the rouge automatique. Pamplelune is also a big miss for me. Perfume is something very personal because what could smell good on someone might smell awful on others, body chemistry, ingredients, and etc. My only reccomendation is to visit a Guerlain counter that has a large variety of it's perfume catalog (which Guerlain has a rich history of them) and try them little by little (take plenty of time like Dominique mentioned), and then pick the one that is best for you.