XLR-RCA-BNC sonic quality differences

I'm really surprised by the lack of answers here.

What I know is that BNC connectors with Coax cable seems to be impressive compared with conventional cabling when using the Dartzeel to Dartzeel combination.

Is that special to the Dartzeels, or is the use of BNC's with long runs of coax beneficial to other setups?

And, would a there be better results using conventional wire and BNC or XLR connectors?

Thanks Fsarc. You obviously have had way too much education in the reading area. You seem competent in the reading comprehesion area too.

What's you take on the differences with BNC connectors of coax, the L-Com cable and a very high quality copper cable?

Your thoughts?

Bill