I said wrong direction, not info. If you mean rare by the stock plastics or frame combo, then i guess you can consider yourself right. But lets not go on about that.
But like others said, besides plastics/frame color, they are all the same besides the first couple years which were J-Arm front suspension and not A-arm. There's also the little things like different plugs for stators, CDI and the brake lights. Those im not sure off.
Find the best deal you can regardless of year. Id personally go with an a-arm bike so suspension upgrades will be easier and more widely available.