I immediately added a YN-300 II ordered me and will only take the F & V R3 as a backup.
PS: Now there are but three piece made to lift all lighting tasks. Just great parts.
Edit:
During the weekend, all three were in use. Two pieces of 2.5 meters light stands for the basic illumination of a dance floor. A video on the rig.
With inserted diffuser there are no shadows. I only had the warm white LEDs dimmed in operation, so that they match the backlight.
And what can I say: you meet (almost) every lighting task - even in very dark corners there is no spot and no shadows. For larger tasks it must then perhaps be the YN-600 - but for smaller locations, this tiny really are sufficient.