WOW GUYS!!! That was great info!! Thank You very much!
Well it looks like most of the reviews I've read about the Bigma hold true! Looks like I'm going with all Nikkor then and I've chosen the following for my needs!
I already have the 18-105 so I think the following will best fit my needs!
AF-S VR Zoom- NIKKOR 70-300mm f/4.5-5.6G IF-ED
AF-S NIKKOR 200-400mm f/4G ED VR II
AF-S NIKKOR 35mm f/1.4G - for wide angle
Thanks everybody for you help again! You have helped greatly in me making what I believe to be a sound course of action!
Many Blessings and Happy New Year!
Dionysus
I owned an f-mount Bigma for a few years, and given its price, it was a very good lens. It was sharper at 500mm than the Nikon 80-400mm is at 400mm (I also own an 80-400, and it's not a lens I'd recommend over the 50-500.) It needs a lot of light, but it's also 25% longer than a 400mm lens, so a lot depends on what you plan on shooting. If you need the reach and can't afford anything long that's fast enough to work with a TC, or anything that's long and fast, then it's the best deal out there IMO.
I never had problems with paint peeling, or internal reflections and I sold quite a few images taken with it.
The 200-400 is a massive lens - you should be careful that you know what you are getting yourself into there. Yes it is great, but there are times when 80-400mm Zoom-Nikkor can be much more practical.
Hand-holding the 200-400 for a long time requires some physical effort. This is all from experience - I've had the lens for a long time.
Having shot literally thousands of images with both the Sigma 50-500 and the Nikon 80-400, I'd never recommend the 80-400 over the Bigma. IQ, especially sharpness is much better on the Sigma. About the only thing I prefer on the Nikkor is the contrast, but that's very lighting dependent. I shot with the Bigma for about 4 years, the 80-400 for about two- there was a lot of overlap, and between the two, I carried the Bigma most times because of the extra reach for birds and the extra sharpness zoomed all the way out. They both shot on a Fuji S2Pro, Nikon D200 and Nikon D2x.
How "big" and heavy the 200-400 is depends a lot on what you're used to and how large you are. I can certainly hold one for a relatively long time, in contrast to a 400mm prime, which I can get about 45 seconds to a minute at a time.
If you have the money, the 200-400 is the one to get, otherwise the Bigma- though the 200-400 isn't great at infinity it's certainly sharp enough for most users *unless* you plan to shoot a lot of distant subjects, in which case you should read Thom Hogan's review as apparently somewhere between sideline-to-sideline distance and 300', the lens isn't very sharp. You'll also want to budget for a new tripod collar, as the provided one tends to have too much play in it.
Paul