The 18-300mm is a DX lens so it wont work on FX cameras so if i upgrade to the FX bodies then the 18-300 would be useless, due to this will the 24-85 VR and 70-300 be better? Also the 24-85 VR and 70-300 are in my budget the only reason im considering the 18-300 is if the image quality is better. I'm buying the lenes with the D7000 and on BHPhotoVideo.com if i buy the 24-85 VR and 70-300 then i'll get both lenses at $883 which is cheaper than the 18-300 and the 18-300 doesnt have any discounts. If image quality is similar then i'd go with 24-85 VR and 70-300 as its ~$150 Cheaper. Which one do i choose?