Have looked at the whole Canon Flashes and was not really impressed by the prices. For professionals it will surely be reasons to stay with the original, but I had to test the luck this flash previously from a friend (EOS550). Was immediately excited because he said to the price. Now tested on my EOS60 equal extensively and found to be very good. Great lighting, soft light - not hit by lightning. Everything you need to be a better Hobbyknipser. Even the slave mode works perfectly with the right cameras. Beautiful exposure without "aggressive" to act in real darker environment.
Recommended. Simply because of the 1/3 price for Original