Check out BlueJean Cables.com. I consider Monster overpriced. I have bought belden audio cables for my pre-amp/power amp and for the dvd-audio from them at reasonable prices. I cannot comment on the HDMI as I use component connectons. I 'm not real familiar with Athena but 12-14 gauge wire if the walls are not pre-wired should suffice. I used 12 gauge wire from Lowes in the family room for the Infinity TSS-750 speakers with sucess. Sounds like you have a killer T.V. and average electronics. However, I do not know much about Panasonic audio equipment. Enjoy.