Short but sweet: this superlens is what you need. If you can only pack one, keep this one attached to your Nikon DSLR and leave the others at the house. I own several Sigma lenses besides this one, and there are certainly times when I want them. The 10-20 (Sigma 10-20mm f/4-5. 6 EX DC HSM Lens for Nikon Digital SLR Cameras) and the Nikon 50mm f1. 8 (Nikon 50mm f/1. 8D AF Nikkor Lens for Nikon Digital SLR Cameras) being the other two “go-to” lenses that I carry almost everywhere. But I am finding more and more that I can get the shot I want with the superlens. The quality is outstanding. The front of the lens does not rotate as the lens is focused or zoomed, so I leave the included shaped hood on all the time. At full zoom, the lens gets pretty long (impressively so), and it’s not the lightest. But it’s full of high quality optics, and all that glass isn’t going to be lightweight. Bottom line: For your Nikon (I own the D90) you cannot go wrong with this product instead of the kit lenses that come with the D90. If you have not bought your Nikon DSLR yet, I suggest going with the body only and get a prime lens or two like these Sigmas; you will be much happier with them than the kit lenses.