Samsara by Guerlain is my favourite but as DH can't smell it, I hardly ever wear it. I'm also wary of wearing perfume as I find that so many perfumes that others wear, give me an instant headache and I don't want to inflict that on anyone else.
Having said that, I think that some people tend to put too much on, when a little goes a long way. I have been told that if you can't smell your favourite perfume on yourself after a few minutes, you still have enough on but your sense of smell has become used to it. Just don't go and drench yourself in it and spoil the subtle effect.