The big question is, the price!
Not for me. I value 100% reliability and guaranteed compatability more than any price difference. Loved my RF-602's but reverse engineering is a completely different challenge and a trap waiting to be filled.
Too often we lose sight of the fact that photography is about capturing light, if we have the ability to take control of that light then we grow exponentially as photographers. More often than not the image is not about lens speed, sensor size, DR, MP's or AF, it is about the light.