I was very surprised to run across any kind of review of this lens. I bought the non D version back around 1990 for the N6006 that I owned at the time. It was quite inexpensive but it fit my budget and the picture quality was just great.
I am now using it on my D200 and it still works great. I recently shot horses show jumping and the focus tracked them just fine. In situations where the autofucus does get confused I just make a quick switch to manual focus.
When I bought the lens many reviewers disliked the sliding zoom, but I have found that it can come in very handy when you need to zoom real fast during action shots. When I've done a very sudden zoom during continuous mode the focus and everthing kept up without a problem.
I don't know exactly what I did pay for the lens back in 1990 (around $150), but it has been a great value for the money.