This flash costs $300. It might not be as good as the $600 Canon 600ex-rt, but it's very close to half the price. The build quality is very good and you also get a soft body (much better than Canon) and a cone. A few thoughts.- I love the audible sound when the flash is reloaded and ready to go, very convenient- I like the look and feel- Fast charge time- More powerful than the Canon 580exii, almost as powerful as the 600ex-rt- Phottix should integrate the Odin system, crap - seems to be eating batteries, further testing to get a better idea, although I also have a Nissin i866 Mark II and this flash blows it away. I'll get a few more of these.