I think the style of bottle is what draws me to a perfume first - it has to look good, so it's pretty sat up on my shelf - I have a little section where I keep all my beloved perfume. Visually, Marc Jacobs Lola is my favourite. As for scent, if I was pushed to choose I would have to go for Abercrombie & Fitch. My friend once told me I smelt 'divine' when I had it on..! It is such a gorgeous scent. The one for men is even better!
Please share your favourites - knowing me I'll go check them out and end up putting them on my wishlist!