That really depends on what you're gonna shoot .. portriat or landscape.
Mobility or photo quality comes first to you ?
I was a D80 user, with Nikon 12-24/4 for landscape shooting, it never disapoint me. While 18-200 VR is super cool for travelling, but photo quality is somehow, compromosed a bit, it's an all-around lenses afterall.
For portrait shooting, I'm using an old Nikon 35-70/2.8, it's so goodin sharpness and color tone.
Of course, prime lenses will always be appreciated if you want some more on quality.


- By Mark Bell