I started with a Sigma flash. It was very inconsistent with the exposure. I replaced it with the 580EX with much better results. I later added the 580 EXII to my collection. Both canon flashes performed equally as well. The 580 EXII now has a problem with the lever lock not holding snug. If the camera is tilted forward the flash looses contact and fails to fire. As a result the 580 EX has become my primary flash.
I am looking at purchasing another flash. Shootsmarter.com recommends the Metz 58 AF-1. I have also been looking at the Nissin Di866. What are your opinions of the Metz and Nissin flashes compared to the Canon in exposure consistency and in auto focus assist?
Mark
