Lotto wrote in post #6244640
I have to defend my eBay triggers

They worked for me right out of the box, have been almost 2 years, they serve me well in the studio and outdoors when Canon Masters fail. There are happy users out there by the thousands.
I'd say you're very fortunate then. I bought a V2 transmitter and three receivers. One receiver was DOA and had to be replaced. Of the three that do now work, one will only work if I remove the battery cover, as having it in place seems to break a contact which renders it inoperative. Other than that, there is the random spontaneous firing, failure to fire at all, and rather variable sync speed performance. I have replaced batteries in everything and there has been no improvement in performance. I've tried using them in a room about 13' square in a domestic environment and still they are unreliable. I have a 580EX I, a 580EX II and an old Pentax flash. I need to mate each flash with a particular receiver, otherwise the random firing is even worse.
When I bought mine I think the only other options were vastly more expensive - Pocket Wizards and well beyond my budget at the time. If they work then they offer fantastic value, but if they suck, as mine do, then they are near worthless.