I don't know whether aviator sunglasses are in fashion this year, yet I want to buy some Ray Ban sunglasses. I like these four models (saw all of them in the store today): 1) RAY BAN RB 8307 AVIATOR CARBON FIBRE 2) Ray Ban RB3025 - 001/51 AVIATOR LARGE METAL 3) Ray Ban Sunglasses Aviator L0205 4) Ray Ban RB3386 - 004/13 (this glasses doesn't look like aviator though) Any advice on how to propely choose aviator sunglasses? Shape? Color? Shade? Plastic vs. glass?