i am currently looking for a used mac for home use. I was settled on a 2011 mac mini with i5, but I am still intrigued by the iMacs. However there seems to be a gap at my desired price range and there are mostly cheaper c2d imacs available. I wonder what is their weekest point? Is it the cpu or rather the gpu? I can always add a ssd or max out the ram, but maybe they are really just old. The mac will be used for photography, but only scanned images - no raw digital files etc, so it shouldn't be that gpu intensive.