Eyeballing some Pocket Wizards now that Live.com is back at 30% cahsback, but I'm confused already... Some of the auction titles confuse me... Some say "Tranceiver", some say "Tranceiver/Relay Radio Slave", some say "Transmitter, Receiver and transceiver"?! What the fuck, are all these different names for the same thing or what? For a "turn-key" kit, what the fuck do I need to buy?