Let the hive mind of Engadget get that for you.
"What is the best wireless surround sound speaker solution? I have a home theater where running wires is just not feasible. I have my own speakers, so I don't want a system that has speakers with integrated wireless. I've done a far amount of research and have only come across a few companies that even offer a reasonable solution: KEF, Kenwood and Rocketfish. Is there anything else out there? What do you recommend? Thank you!"
Your friend is right, your OTA from WITN is an uncompressed digital signal. Right now, OTA with is the ONLY way to get uncompressed HD. Every other delivery format compresses the signal, resulting in phenomenon as significant as muted colors, digital video artifacts, lower resolution, and overall less satisfactory experience.