I'm as close to pulling the trigger on a DSLR as I have ever been, with the D7000. I already have a collection of lenses that I can use, but I go no wider than a 24mm f2.8. So, if I get one, I may need to fill the wide angle gap. Nikon has a few 18-xx or 18-xxx zooms, and other than the f2.8 versions , which are right out of my budget, there isn't a lot to differentiate them , optically. Is the 18-55mm any better than the 18-70 or 18-105, or 18-135mm zooms ? It doesn't seem so, really. So , what about other options ? I really only need something in the 18-25mm or 18-35mm range, to fill the gap. Is there something in the 3rd party market worth considering ?