I am confused about selecting a 70-300mm lens. I have 2 lenses to decide between, the 'Nikon 70-300mm f/4.5 - 5.6G ED-IF AF-S VR' and the 'Sigma 70-300mm F4-5.6 APO DG'. I hear lot of good things about the Sigma lens even though it doesn't have any VR and I wonder if the Nikon is worth the extra investment. I read lot of reviews about the Nikon too but not many seem unbiased.
I have a D7K.
Would appreciate your response.
Edit: I am looking at this lens for a little bit of wildlife and some portraits but all outdoor. I would mostly be holding the lens but plan to get used to the tripod.