Well, it's been a long time since I've been here (again!) A long story of many distractions. However, PGC -- who now lives up here wanted a TV -- and since we have two apartments in the building -- and I have not had a TV since 1993 -- the agreement was it would go down in his apartment. SO we bought a VIZIO XVT553SV 55-Inch Class Full Array TruLED I am having trouble finding out information of what I need. We have comcast cable Digital Starter with Video On Demand & HD Technology i already have the HDMI cables -- but I need a longer coaxial cable from the wall to the comcast box. The trouble is -- I have no idea what specs I want. Do I want THX certified? Someone told me that THX is for older technology. The monster cable I was looking at was discontinued. Another person said that tHX certified promises good quality. I also know that many people say -- al lyou need is a coaxial cable and there is not point in throwing away money on an expensive Monster cable. I am not tryin got conserve money here -- I just want ot get the best -- I just don't know what the best is. Can anyone help?