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/