Right I am hoping you can help me plan for the next purchase of the year....

I want some length...but a bit of speed too!

Primarily I am looking at Birding, Plane-ing, motorsports and a bit of wildlife. I am also looking for a step up in the glass stakes. However I am never going to be a pro and don't have $7000 to spend on 2.8 glass.

Right.

I am looking at Nikkor 300mm F4 + 1.4 Tele or the Nikkor 80-400 VR or a Bigma 50-500mm or 150-500mm. Argh!

I am swaying towards the prime with the T/C but I have read that it can be a slow to autofocus, which would be no good with plane-ing and motorsports, esp with the T/C.

The 80-400mm seems to be ok, but I can't imagine it would be as sharp as the prime.

Please help, tbh I am not sure I know what I am talking about, but at least I have narrowed it down to 4!

So come on Nikon folks.....please help!

Roo