Not quite as accurate as the physical flash cord in terms of meticulous work of the exhibition, but did not fail once, and it is an excellent solution when a physical cable is not practical or possible. Like the fact that it is like all my previous TTL wireless flash systems were "dumb" / manual. Also, I like the fact that if they are damaged / lost, I'm not as much money as I would be if I had lost the new Pocket Wizards!