LV Fragrance help!!!!

Hi all,

I need help picking a fragrance. I've sampled Mille Feux and Contre Moi. Like them both. I haven't sampled Rose Des Vents but it seems that be popular. What is your favorite? I only want to get one and not the sampler package so help me please!!
TIA
How is it possible to buy a perfume without testing it ? And how can you care of what people liking ?
The perfume will react with your own skin. Same fragrance on different people smell different.