Witric Power - Witricity Explained

Basically, I am wondering about any problems that anyone might have with a specific brand or model.

I know that PocketWizards are "top of the heap", but I was wondering about other, less expensive units, and if they show problems with interference from things like large pieces of metal, high energy sources, line of sight issues, etc..., or any other problems you would like to share.

I appreciate any input you might have.

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