BNC or Coax?

I'm absolutely not an expert on this but my understanding is that BNC is significantly better than coax from a jitter perspective.

BNC is a cable connector - coax is the cable that goes between the BNC connectors. You are comparing apples to oranges.

I suspect that you meant to ask whether a BNC connector or an RCA connector is preferred. The answer would be the BNC connector -- it is designed to handle high frequencies, and will provide a better impedance match to the cable (which is important for relatively high speed digital signals such as SPDIF, although unimportant for analog audio signals).

Regards,
-- Al

Thank you all for your replies.

I do understand that BNC is a connector, not a cable.

My understansing is that HD video signals (like from DVD and BD) are faster (greater bandwith?) than digital audio signals (from CD, PC). I have heard that BNC beats coax for video (via composite analog or by 75ohm digital), but is about the same for digital audio. Comments?