I just recently got a Nikon D60 with a 18-55 kit lens. I would like to get a lens for shooting pictures of birds and other wildlife. I dont want to spend more than $500 (Canadian$). I was looking at the AF-S DX Zoom NIKKOR 55-200mm f/4-5.6G IF-ED VR for $290 or the AF-S Zoom NIKKOR 70-300mm f/4.5-5.6 IF-ED VRII for $500. Is the difference between the two worth $200?? Thanks, in advance.