Been using a pair of YN-603c's for a while now to trigger my single 430 ex ii, but am looking to add better lighting and thus new/better triggers to my setup.
Currently, I'm looking at picking up an Einstein 640 but am uncertain as to what triggers provide which functionality for it. I know it's a bit unique in that certain ones can/can't trigger it appropriately or control it, and that the Cyber Commander is the option suggested by PCB (obviously), but that's about it.
This is where I would greatly appreciate some feedback and assistance on compatibility and functionality of current triggers on the market, from cheap to expensive. CyberSync, YN, Cactus, PW, ...
To throw another wrench into the mix, I use both a 5D (which I know limits some triggers' functionality and controls) and a 7D. So, please keep that in mind in any information provided.
Thanks, all. Looking forward to getting this all figured out.

