Summary: I hope this helps someone. So, with my TV already ordered and on its way, I stumbled upon the "Audio down-converting issue". If you search through the reviews both here and elsewhere you will find many people having an issue with the surround sound signal coming from their source (STB, DVD, PS3, Etc.) being down-converted to 2 channel by the TV. Makes sense if using the TV speakers but if your like most people, you want to use your surround receiver.
Summary: The picture is great, but the sound is not very loud. I have trouble hearing even when I sit direct in front of the set with the volume at 100%. Also, the set up documentation does not show how to hook up a surround sound system. Nor can I find the ports for the plugs from my surround system to the TV.