My cable box has every imaginable output, to my awareness. It is the Scientific Atlanta 3100HD. I would like to try recording HD signal to DVHS tape. Does anyone know which output(s) I should feed to my JVC HM-DH30000? Also, I'm looking at buying DVHS tape. The only tape I can find is Maxell DVHS 300 minutes (5 hours). First, is this 5 hours of top quality? Second, are there other options? Third, my best price thus far is $8.63/unit + shipping. Please advise.