More 'reach' than 200mm! Well, the options have all been eliminated, haven't they? If it MUST be Nikon, the 300/400 are out on price, convertors are out due to sharpness degredation, what else is there? Consider this. Above 200mm, a tripod is becoming essential. Does that suit your style of photography? I know, it's best to use a 'pod at all times but we don't, do we? Some situations just don't allow. As an OM user, I've just added a 300mm to my armoury - £200 and it is excellent - even hand held 1/125 @f4.5 100 ISO but then the lens is quite compact compared with some. I've even managed to find the matched 1.4x convertor for it, yet to be tested. But back to the point, this combo was purchased for a specific purpose, for use on a tripod to photograph a nest site and triggered by remote control (I couldn't justify the price of the 400 or 600mm lenses). Do you have a particular purpose in mind, ask yourself, why do I NEED this? Personally I'd go for a 105 macro.