Upload & Sell: Off
For head shots I use any of the following:
Nikon 105mm VR
Nikon 70-200 VR-I (cuz I couldn't afford the VR-II upgrade)
Nikon 200/2 VR-I
The 85 is wonderful for portraits, and I like Sigma version over Nikon G version (esp when considering the price-performance ratio).
Depending on the working distance, and venue/setting, I will also use the 105 VR macro, or the 200/2 VR. Both fantastic lenses.
But a lot of times, the 70-200 may already be on my camera, and it's a true workhorse. Its bokeh may not be on par with the f/1.4 or f/2 lenses, but I've never gotten a complaint.