There are three levels of cable performance:
Bad ones. Not just cheap, some very expensive ones are crap. Most cheap ones are not the best in at least RF filtering.
Good ones. WBC and Blue Jean LC-1 seem to fall into that category. So do most well made ones. I have been happy with some Amazon "Cablesonline.com" ones. A lot of boutique ones are at just as good. There is some to be said for star-quad or braided like Kimber IF you have a LF noise problem. I don't think I would do a long run on the Kimber, but that is just me. ( not cheap either) I would attack the hum problem elsewhere, but I am an engineer and I look at systems inclusively.
I like that WBC and Blue Jean will make any length. Shorter is always better! I also don't like the two foot long RCAs BJ uses. Preference. Most honest cables post their capacitance, but not their inductance so knowing if they are balanced is hard. I have not been convinced yet that anything above Belden 1505F, Gothan, LC-1, Canare L4S6, Mogami W3080 etc. on generic DIY all brass RCAs is any better in any system that costs less than my house. I'll never know.
Magic ones. All in the price and your head. No cable can add anything, only take away. All addition is in your head. Real to you even if not in the real world. I do not want my cables to tailor my music by distortion or filtering. Some do.
We can measure everything about a cable. We can't tell you which of those measurements make you, or as newbee correctly pointed out, measurements are of the cable, not your SYSTEM. No magic. Just science. Fortunately most line level are reasonably predictable with somewhere between 10 and 100 Ohms out but differences in feedback and most inputs between 22 to 50K inputs, but differences in input filters. A passive preamp can throw a monkey wrench in it. Much easier than speaker cables.