Smells like teen spirit

I'm getting a little bit sick of my wrists smelling like 'Isis'. Don't get me wrong, it smells surprisingly good considering its a £9.50  Marks and Sparks concoction but I've sort of got to the point where I'd like a signature scent, the type of perfume that reminds people of you even when your not around. I've gone through my 'Ghost' phase and had a dalliance with Lacoste 'touch of pink', which I would gladly revive for a summer fling...(it smells like kisses at sundown when you know you have to be home in an hour...which in fragrance terms translates into orange, cardamon, jasmine and a hint of vanilla). My problem is I have a fickle nose, I want a perfume that will become the odor equivalent of a tattoo, ie permanent and personal, but I change my mind every morning when I spritz on a sample. I can't decide if I want a scent that will have me feeling like a 19th century New York socialite or one that smells as though I've just had a close encounter with a leather-clad biker who smokes roll ups and has a fondness for whiskey.
 I haven't even tried heading to the department store yet for fear that I will blurt out 'excuse me miss, do you have a perfume that smells as though you've captured Audrey Hepburn's elegance, Christian Slater's badassness and Joni Mitchell's free spirit then distilled it all and put it in a pretty little bottle?'
Actually that's a whole new dilemma. Being the magpie that I am, I'm always drawn to perfumes if they come in charming packaging. I'm not so superficial that if I found a scent I loved in an awful bottle that I wouldn't buy it, It's just that if I found an average fragrance in an amazing bottle I'd buy five...