We all know how Noyze (can't remember his new given name..lol) and others seem to like the Sigma 18-250mm lens for Nikon. I wonder how it stacks up against the Tamron 18-270mm lens? I know the OP title says " 17 " but that is a typo and I cannot edit it... I know about tests and benchmarks, but I also want to know about real world. I have seen and used lenses that didn't get such rave reviews, that turned out that I liked them just fine when I tried them. Out in the real world, where you look at images on screen, on PC monitor, and in print is where it really counts, and to me, that counts more than in a lab somewhere. Does anyone know anything about either lens, especially the Tamron, from any personal experience? Thanks!