Buy something with a for sure forward path. I have been very happy with cactus v2 triggers off the bay from Hong Kong. 2 transmitters and 4 receivers for under $180, I think I recall. Two years of sporadic use, and I am more than pleased with what they do. The only failure is of the user variety when I forget to turn the receivers off and find them dead after sitting in the lighting case after being on for 3 months.