Pocket-Lint: The Canon EOS 600D has been the subject of internet rumours for some time now, but the manufacturer has finally made things official. Sitting at the top of Canon's entry-level EOS series, the 600D is the natural successor to the 550D, but what if you've already got a 550D? Should you feel jealous? And is it worth upgrading? Read on to find out. It's the Canon EOS 600D vs Canon EOS 550D.