i use Alien Bee products.
Cybersync Trigger Transmitter (CST) 59.95
Cybersync Receiver (battery) (CSRB) 69.95
Speedlight Foot Adapter 15.95
all the necessary cords come with the transmitters. i use a small piece of velcro to attach the CST to the side of my flash when using 2 flash set up and one is on my camera's hot shoe. if you are using only 1 flash the CST goes on camera's hot shoe and the Speedlight Foot adapter goes on the bottom of the Flash with the CSRB plugged into it. use the foot stand that comes with the flash to place it on a mantle or table top (or screw it into a lightstand in the opportunity is there).
very affordable solution which offers alot of lighting flexibility. i currently have 3 CSTs, 2 CSRBs, 1 CSRB+ and 2 580EXs. I plan on adding 2 more speedlights so that i have a very lightweight 4 light package that i can use if time and logistics dont allow for the use of monoheads.