What car should I get?

I have a Dodge Durango right now... perfect for the snowy winter. But I want to get something more flashy and fun and just need something new and different in my life! I am 24 livin in Boston. I am thinking either a '10 Camaro, couple years old A6 Audi, or a couple years old 6 or 7 series BMW. All of them would be used with only about 30-50k miles. Opinions? or different suggestions?