My first experience

Tested for Christmas, it works great with my Canon EOS 40D.
Sync is done correctly at high speed or not.
I tested with the controls YN YN 622c 622c coupled to TX. This seems effective. But I have made a few trips currently.
I am satisfied for the time of this product. Too bad the zoom head is no better range (24-105mm only, or there is beginning to be the norm 18-200mm). For a recent product it is a shame really do not incorporate the most current opportunities. That said it is still very competitive if only for the price and HV Ettl and capabilities.
I do not regret the purchase.
The difffuseur is relatively difficult to establish however. Must be forced to position. That does not make me too immediate to use it (the diffuser, the flash will serve me well :-))