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!"
Monoprice.com has served me and all my friends well for some time now. I can get around 10 HDMI cables from there for the price of one over-priced, over-hyped monster HDMI cable.
When looking for cables, just look for something with a good sheild and rated at the proper specs (like 75 Ohms for video and digital coax). Anything above that is just going to cost you more money and give you nothing in return for that extra cost.