I have the Nikon 4000, 5000, 8000 and 9000 and I use Nikonscan with all of them. Before that I used Silverfast with my old Polaroid 4000 and more recently with the Microtek M1, and there are some things about Silverfast that I prefer over Nikonscan. I've tried Vuescan, but haven't adopted it. Overall I'm quite happy with Nikonscan. I often have to scan negatives as positives and invert in the Nikonscan curves tool, but that is no big deal. The negative setting may not allow you to get the full density range of the film, the positive setting will.
Best,
Helen