Looking at connecting a Sony 40EX500 TV with a Panasonic DMR-XW380 recorder. Do I need the gold plated connector, expensive HDMI cable when I can see all the connections from the UHF aerial through the splitter box to the wall outlet and to the TV are all common alloy or plain tin? I can buy a plain cable thru TMe for $8 or a plastic boxed cable from HNm for $150. Thanks.