Nikon 18-200/f3.5-5.6 G DX IF-ED

[unknowndomain]

Has any one got any comments on the Nikon 18-200/f3.5-5.6 G DX IF-ED I have been looking at getting a new lens to replace my Sigma 28-300mm F3.5-6.3 Macro (Not the DG one, the one before DG). My current lens is good however I find that at full extension unless in good light camera shake is bad so I was hoping that the VR on this might improve things, also the lens tends to be quite slow at focusing and makes a dreaful noise, so I think the Silent wave motor should improve this too, however the lens aperture's arent much of an improvement and I would be loosing 100mm. An opinons or what ever would be appreciated.

 

[unknowndomain]

So as its in short supply that means its popular (or the factory blew up?) But this doesnt answer my question as to weather its a good lens, suitable as an alternative upgrade to my existing, also after reading further into it the retailers mention that it acts like a 28-300 on Nikon DSLR's due to the sensor size. If true it sounds even better!

Thanks