My ol' trusty Nikon 105mm f/2.8G is in need of replacing. I have used it for portraits, and macro a few times. However, I am in doubt; should I get the Nikon 105mm f/1.4E or wait for the new Sigma 105mm f/1.4 ART? I'll continue to use it for portraits, and keep the old Nikon 105mm for macro. The USD600 is not a dealbreaker...
I could never figure out what the appeal of VR on a portrait lens is however. I would just use a 70-200.
Personally, I would look hard at the Sigma before going for the Nikkor.
I will await some reviews of the Sigma, and then see if I can borrow/rent one of each for a day before making my decision.