Good evening all, Well im going to use Black Friday as an excuse for getting the D7000 body. Now im thinking I need to upgrade the Kit 18-55 VR lens for something a little bit more well built. Optically speaking the kit lens mated with D5000 is not bad at all for such a cheap lens . what I want to gain is a more solid feel, faster AF and ?wider range/aperture. What I shoot: im an enthusiast , I shoot mostly outdoor nature scenes, plants, animals. What I want to improve: indoor portraits, events, Carry less equipment. What I have: Nikon D5000 , Sigma 8-16mm , 35mm 1.8 AS-F, 18-55mm VR AS-F, 85mm Macro VR AS-F, 55-300mm AS-F VR , SB-600 Flash. What im looking at is the Nikkor 16-85mm AS F VR 3.5-5.6G and the Tamron 17-50mm f/2.8 SP AF XR Di II VC LD. Optical reduction is a must. Is there any other options worth looking, Sigma version doesn't have as much "raves" as Tamron. I've read 18-105mm is along the same lines as Nikkor 16-85mm???? thanks Jeo G.