The next logical step

after I already have a Yongnuo 560, 560 II, 565EX and ST-E2 possess.
The decor is like always complete and good (Case, Stand, User manual in printed form), the services (tested on a Canon 7D) perfectly, and now works even HSS, which means you can even beyond the camera-related shortest sync speed flash problems without getting a noise bars on the picture (I'm here not to the technology a - who knows it knows where the problem occurs because of lightning and what needs to support in order to solve it).
These HSS technology works the way as expected also fine with the optical trigger Yongnuo ST-E2, and also with the radio trigger RF622C.
It should also be noted that the delivery was very fast and I can therefore also recommend this distributor (another who had advertised with "delivery from the central warehouse England", not delivered well within 8 weeks after ordering!)