I believe you are talking about the AF-S 17-35mm f/2.8D ED-IF lens. If that is the case, YES ! it is really worthwhile. I just got it and cannot stop admiring its capabilities, razor sharpness, constant f/2.8 brilliance and contrast. Hope to soon post some pictures, when I have a better connection than right now. Ok. Now I have a slightly better one.
This is picture taken in almost full darkness this morning of the main level of the wine cellar at my club. F5, Kodak Supra 400. SB-28
This was taken of my dark studio in some haste. Just to try out the lens in a hurry at f/2.8, also with the SB-28
I just updated my previous link (above) with a couple of examples of what that lens can do even shooting in haste and under tough lighting conditions, and even wide open. Have a great time JRP My profile Previous photography stuff, before Nikonians: A Brief Love Story