Calumet Radio Trigger Anyone?

Has anyone used the Calumet radio trigger? The transmitter receiver set is $20 off right now ($40), but I don't know if it is any good. I have only used a cactus trigger before and it interfered with my 5D, causing some pattern noise at the edge of my photos. I had been contemplating alien bees Cybersynchs as the cheapest, reliable option for a dumb trigger, but now I saw these. Anyone know about them?


http://www.calumetphoto.com/item/CF0048/

No experience with them, and I've only seen them referenced once or twice. They are not widely used (that's not to say they are good or bad...there's just little info on them).