Took the lens for a week long test drive. Trying to decide between the 200 f/2.0 and the 300 f/2.8
I use to think that nothing was as good as my 400 f/2.8, but this lens may be better.
It has the best image quality I've ever seen in a lens.
Light enough that I can handhold it, but I can handhold the 300 f/2.8 also.
So it all comes down the focal length.
Probably buy the 300 not because it's a better lens, both are exceptional.
It's just that for what I do the 300 is more useful.
Also the 300 is $1200 less.