For me it would come down to the dsc-t7 and the sd500. I would have to reccomend the sd500 because it has 7 megapixels instead of 5, an optical viewfinder, a faster and longer shutter speed, a closer focus range, and more choices for an iso speed. To top it off it looks like they are around the same price range too. The only thing the sony has over the canon is the manual focus and larger lcd.