After recently acquiring a long wanted 300D, I plunged into buying a 550EX flash gun for it. I didn't know much about it so I started seaching and reading. I came across this excellent article: http://photonotes.org/articles/eos-flash/ Now I am concerned by the aparent problems that are encountered by digital Canon EOS cameras and the E-TTL flash guns. What are your experiences? Are these problems significant or do these flash units give good results most of the time? I have read that for consistent results one should use the camera in manual mode and let the flash do the rest.