From what I can tell there are three versions of the Nikon micro 105mm. The newest and most pricey being the 105 AF-S VR. (forgive me if I am getting some of the discriptive letters wrong). I realize on the older versions when you focus on 1:1 the lens extends out and becomes very long.
I haven't shot with it but the first disadvantage that comes to mind is light. Are there others?
Do people shoot with the AI-S or the AF version of lenses in general. The price difference is pretty significant.