Quote Originally Posted by Kayaker72 View Post
Is the additional range and RT worth it? Are there any other benefits to the 600 over the 580 II?
Except for the benefit you will get from zooming to 200mm the 600 and 580 have pretty much the same power. The RT is what really sets it apart. Of course you'll need either an ST-E3 or 2nd 600 to benefit from that though. The UI is way better than the 580 too. The LCD panel is fantastic. I have 3 600s and an ST-E3. Click here to see how I was getting consistent fires at 400+ feet.