Richard, you have limited my XMAS shopping in such a way that I simply can't say...
1. Whatever is within my budget I already have, 10.5, 16, 17-35, 20, 24, 28, 40, 45, 50, 85, 105, 135, 180, 200, and 300mm;
2. Nikon should produce a 400mm PF and I will be the first to buy it;
3. I don't mind off-brands at all as long as they have a Nikon mount, like the Coastal Optics.
Yours, Jakov