Since the Tuff-TTL provides clear advantages:
-very much cheaper
-erheblich greater reach what one hides in group photos or lightning somewhere behind thick walls quickly shows benefits
-Flexible, Because you can drive for example with two transmitters on the same two cameras flashes without problems
The only drawback: no groups. But I use 3 Speedlites unleashed and have yet to miss no control group. So far I could very well check all illuminations with the placement of lightning and thus one is not slower than a perpetual trying out different settings of the groups.
