i had a CANON EOS and am now wanting to upgrade to a digital camera, i have had a lot of little "happy snap" cameras in-between but now want to invest in a good camera. budget no more than $800-900. i have borrowed my sisters SONY a65 which is great, takes quick sharp pics and i have a 18-270mm lens on it, i mainly take photos of kids soccer and swimming so i am needing a camera that has the quickest reaction time and a good zoom. this camera i have borrowed from what i have found is actually out of my price range so can anyone recommend one for me. Also can i use my old lenses on a new digital camera? i have a canon ef 28-105mm and a tamron aspherical xr 28-200mm.