I've been searching and reading and just want to make sure I have it correct. digital audio cable=composite video cable=subwoofer cable=any 75 ohm rated cable including something like RG-6 Is this right? So for my LFE out on my pre/pro I could buy a subwoofer cable or just use a composite video cable?? or make my own with RG-6? Also...is optical digital better than coaxial digital? It seems most of the receivers have a lot more optical connections than coax connections. It seems to me the digital to optical back to digital conversion would actually be worst than just straight digital.