Just a quick note and THANK YOU to Canon. One of my 580's had the plastic shoe break after the camera and tripod got knocked over when the canopy hit them during a wind burst.
I searched ebay and found a replacement shoe for $20. including shipping. Then I called Canon and they sent me a replacement bottom piece which was $5., so I bought a few. It only takes a minute to replace. You don't need the whole bottom section (unless that is what broke), just the one small shoe piece. Canon took the time to search if just that piece was sold separately.
Thanks Canon!! Of course, if they made it out of metal, we wouldn't need to replace them so often.
I just can't seem to say something nice without qualifying it a bit.
Doug