For a D7200, looking at Sigma 100-400 with a TC , SIGMA 150-600 OR Tamron 150 -600 g2. All are are about the same price. Any advice would be appreciated. I know the Nikon lenses would probably be better but they are way out of my budget.
So that lens is now considerably cheaper than the G2 do you think the difference is justified?
I second this.I have the Sigma 150-600 C. Very happy with it.
When I went out long lens shopping tried the Sigma, Tamron and Nikkor - came out of the shop with the Nikkor 200-500 5.6e - could not be happier. For me when the store let me try out all three I initially didn't really think I'd go for Nikon. I have both Tamron and Sigma lenses and have no problem with them - and they were wider on the short end and 100mm longer why pay more for less? (The Nikkor was more but not by much). Came down to speed and accuracy of the autofocus. At least that was my experience that day. I was just happier with how quickly and accurately the 200-500 focused over the other two. The constant aperature is nice but not a deciding factor. It works well on my D7100 and D610. Also found it takes the Kenko T.C.'s (1.4) well.
looking at Sigma 100-400 with a TC
We really can't spend your money correctly without knowing what you plan to shoot with this lens.
I think I would have held out for the Nikon if I had not gotten a killer rebate on the Tamron