I love almost every Hermès scent, but my all time favourite is Hermèssences Brin de Reglisse... it's so ME that it's almost ridiculous! It starts kind of "not for everybody's taste" and it develops into a pleasant residual scent. It's just perfect. When I first started wearing it I remember sometimes thinking "something smells really good here!" and then I realized it was me! ^^
But other than that, I also like Hermèssences Vétiver Tonka (it's yummy!) and for everyday wear Terre d'Hermès is fantastic too.