However, I have decided to change from the d60 to the d80. I have the option to get a the d80 with the 18-55mm lens and the 55-200mm lens or the d80 with the 18-135 lens? Is it better to get 2 different lens just to gain a few more mm's? or should I just stick with the one lens? The convenience would be to not have to change out lenses BUT will a few more mm's make that much difference? Say if I were shooting the sky?