A huge benefit is the capability of changing the flash's power level!!!
I've got four of them now, and it's nice to be able to control them individually or together
Great products at a great price!!! these work amazingly well with the TT 850 flashes
and that's plenty for most jobs
Using this with a Canon 7D, 2 TT850's flashes and a TT860 flash, a Cells II-c, and a FT-16s transmitter
Yeah, the range isn't that of a PocketWizard, but I'm getting about 120' reliably