Oh Margareta, you give me hope!!
I've been here eight months and am just coming down off "gotta try/have everything"!! (Just resisted the impulse to buy a bottle of Fleurs de The Bulgare on EBay 'cause it was only $230 instead of $300.!!)
I like your idea of arriving at a collection of just ONE from my favoritest groups with supporting lotions gels and what not. But I guess I've got a way to go! And I think there's really no place to get to, because I find (so far) that my tastes keep evolving.
None of which is an answer to the question!!