I had the vrI and now have the vr II. The gains are definitely worth it in my opinion.
Kev.
I agree
I think if, like Kev you're photographing very fast-moving subjects in variable light, then yes the VR II is worth it.
If, like me your subjects are people, then the VR I is more than adequate.
I've actually been using an old 80-200 non-VR lens for the past four months as well and it was fine...
It is nice to get my own lens back though...