Excerpt: I barely use on camera flash but Ive been using 580ex when i needed to, somehow i had problem with my 580 that has inconsistent output and so with color inconsistent color problem. Recently I borrowed 600ex and i really liked how the all buttons are layout and it was very easy to use, (without reading manuals) , slightly lighter body, consistent output so far. then its neck move around very smooth (I use its neck turn around a lot to adjust bounce angles and all) .
Excerpt: Using this a 2nd flash along with ST-E3-RT transmitter. Lots to learn moving to such a full featured system. Radio wireless works great. I'm not sure how I managed, but once I unintentionally cleared the ID address. For their premier flash, you'd think Canon could use a metal thread on their flash stand. It makes me nervous putting it out on a stand "in the wild".
Excerpt: The things I can agree with on other reviews are that the latch is not as smooth as previous models of Canon Speedlites which I was surprised to find given this is the newest model, and its hefty price tag. It does have a bulkiness to it, but given the output, I guess I have to live with that. I recommend you make sure you "lock" it so you don't accidentally change your settings mid stream.
Pros: Consistent Output, Durable, Fast Recycling, Powerful Output
Excerpt: I used this flash at night time when i went camping. I used this flash for indoor activities, the flash worked well to what I expected to see on my pictures. I would recommend this to friends.
Pros: Consistent Output, Easy To Use, Fast Recycling, Powerful Output, Versatile
Excerpt: Hands down these are the best speedlites to date. The best feature is the radio triggering. No more additional add ons needed. Straight out of the box they sync with any other 600s or the radio trigger with full ettl and manual controls. They're sync optically with any other flashes on the market as well. The solid build quality and weather sealing is a bonus.
Pros: Consistent Output, Durable, Easy To Use, Lightweight