Elsa, I have the 200-400 VR (first model), which I bought when I had lots of money and ambition. Times change, and I have found that the lens is great for candid portraits in convention-type venues when mounted on a gimbal, and also for wildlife shots of relatively static animals. It is an amazing lens.
I got it thinking I would get more use from it, and told myself that, absent dropping it or losing it, I could always get 75% of my original cost back. That's all true, but it is a big honking piece of glass, and traveling by any means except a private auto, it's a bit of a burden. I have yet to take it on an airline vacation. I do look forward to getting more use from it when I retire in a few years, but for now, it's my special toy, used much less frequently that I had expected.
I'll sell it for $5200USD? Maybe? I'll be in J'burg in 8 weeks.
Kevin