They're cheaply made, have a pretty short range (~30 meters), and only sync up to 1/180th. of a second. I had the internals separate from the plastic covers and, for me, they didn't always fire. I returned them about 4 days after I got them, purchased the wizards, and never looked back.
I'm hearing good things about the Elinchrom Skyports. You can get the Universal set for ~$185. (You don't need the ones designed for the RX monolights unless you have Elinchrom RX monolights.) The only thing I'd be wary of is that they operate in the 2.4 GHz band along with cordless phones and all kinds of other consumer products. They're digitally encoded though, so they're supposed to be resistant to interference. Also, I haven't seen them in person but the antennas look a little flimsy to me.
People who do stupid things with dangerous substances often die! -me