Cables a lot of them are pure marketing hipe over priced and full of lies!.
Here is what I have used and works very well Canare Cable used mostly by Professional broadcast engineers and sound technicians.
Speaker Cable: Canare Star Quad 4S11
Audio Interconnect: Canare RCAP 75 Ohm
Video: Canare V-3CFB
"Canare manufactures the best in Pro Audio and Video Cable, 75 Ohm BNC, F and RCA Connectors, Patchbays, Cable Reels, Snake Systems, Assemblies, Crimp Tools and Cable Strippers. In 2004, we launched a full Optical Product Line for HD upgrades in the broadcast market. Professional broadcast engineers, sound technicians, A/V facility integrators, design consultants and many leading OEM's rely on Canare's product, proven reliability and top notch customer service.