Upload & Sell: Off
I think this lens is highly underestimated by many.
I have only seen raves for this lens, so I really don't know what you mean with that. If you mean that not everyone is buying it, well, it is huge and heavy, and very expensive, and extremely specialized.
It's quite easily one of the best lenses Nikon has ever produced
Easily the best 200mm portrait lens you'll ever hold
...from Nikon, yes. The Leica 180 Cron and the two Canon 200/1.8 and 200/2 lenses are in the same class. The Leica especially has five distinct advantages over the Nikon: it has a built-in hood (!), it weighs 500g less, it is 3cm shorter, it focuses 0.4m closer (I would *love* this in my Nikon), and the shape is *much* better for handholding. If the Leica was AF and VR, I would have bought it instead of the Nikon.
The shape especially is a huge deal. With the Leica, you can place the tripod mount in the palm of your hand and focus with your fingertips. With the Nikon, this doesn't work, and no matter how you hold it, there is some awkwardness. The foot is too far forward to be of help here, and an uncomfortable shape.
Don't get me wrong, fantastic lens, and I am very happy and honoured to be able to own one, but it is not perfect.
If I ever get really wealthy, I will own both: the Nikon for AF and VR, the Leica for manually focusing and non-action shots.
Oh, and the Leica has a real lens cap. Perhaps not a big deal to some, I still prefer it to a sack.