Canon Camera Museum has published a technical report on the EOS Rebel T5i and EOS SL1 cameras. These cameras are known as EOS Kiss X7i and X7 respectively in Japan. You can read the article on Canon's website. Although I am not a big fan of either camera, they give rather interesting background material to the development of the two models. For my money, I would buy the Rebel T4i and save some money instead.