Quote Originally Posted by neuroanatomist View Post
I suppose my main interest in the 400 is that versatility, the option to use it for sports when the time comes for my kids. But, I suppose I'd be better off with the 600 now, and adding the 300/2.8 II down the road.
Well, the 400 would definitely be more versatile, and it might be my choice for exactly the reasons you mentioned, but then I don't photograph birds. On the other hand, if you're thinking of adding the 300 later... well... that's a tough choice.

Hey, I have an idea... why not just get 'em all?