I recently purchased a One Wireless Radio Slave Flashgun Trigger Unit (transmitter + receiver) 4-channel. I thought I'd give a brief review of it as it was tough to find any info if they worked.
When I first received it, it looked like a cheap design. Plastic etc and came with no instructions.
I tried it with my 30D camera and 580ex flash and worked very well. I tried it with my Sigma 500 (non super) flash and it wouldn't work.
I noticed there was a PC input in the receiver, so I tried it with my strobe lights and it worked again. Happy days
Therefore I'd recommend getting this unit instead of the studio one as this one I got can do both flash and strobe.
Hope this helps