Hi all! I have a budget here of about $2000 or so. I'm looking at one of the following three lenses -
Nikon 200-500mm f/5.6
Sigma 150-600mm f/5-6.3
Tamron 150-600mm f/5-6.3
...most likely with either a good 1.4 or 2.0 teleconverter.
Between the Sigma (non-sport) and Tamron, I'd probably go...