RGB5 - 5 cable conductor for High quality video runs. Can be terminated to use for component video, s-video, rca video etc. RG59 - Typically the old coax video cable used for simple video terminations. What I found out was there is also an RG59 cable made by Liberty which has some similar qualities as the old RG59 but is manufactured specifically for HD terminations such as component video. This cable is actually called InterFlex SD (Interflex Serial Digital) cable. Similiar to this cable you can also buy a cable called 18CMR which can be used in the same capacity as "RG59 Interflex-SD" but is better for long runs through walls or ceilings, the 18CMR contains the same qualities as the Interflex Cable and is good for long SUBWOOFER runs. I also found out that niether of these cables can be used for speaker connects. Regular speaker cable preferably 14gage to 12gage with a CL rating for fire is the best.