Just bought a Nikon D80 DSLR camera. Love it, pics are amazing. I can't wait to take some bike action pics. I'm using our older lenses, a Nikkor 50mm, and Tamron 28-200. The 50 is a great lens, and the Tamron is ok, but I would like to go a little wider. Tamron has a new ultra range 18-250 lens, that gets seems to get decent reviews, but you give up some speed and quality for that range. Nikkor has a very highly rated 18-200 VR lens, but it's at least $300 more then the Tamron, and often out of stock. Any thoughts? I'm already loving the camera, so looking forward to a new lens.