Hi all, looking for some advice and feedback from others' experiences. I have a Nikon 18-105mm VR lens, which I bought to bridge the gap between the 18-55 kit lens that came with my camera (D3000) and the 70-300mm VR that I bought (most of my photography is motorsports or wildlife, hence the big zoom). The 18-105 works OK, but I find it's slow to focus compared to the bigger lens, which is a bit of a frustration when trying to shoot fast moving subjects.

Can anyone with experience of the Nikon 18-200mm VR lens tell me how the focus speed is on that, as I'm wondering if I should try one of these instead of the 18-105 (birthday and bonus money burning a hole in my pocket at the mo!).