Cables do make a difference. Years ago (for my speaker cable) I upgraded from an Audioquest (AQ) to Evidence Audio. In the latter, everything about the design and the materials was better, so although the AQ sounds fine enough - and in jaddie's case where he's not comparing it against something better - you just stick with your metrics.
I suggested a Blue Jeans cable because they are supplied by Belden who are known as a cable maker for sound applications. That cable should be enough quality and you won't be buying into a "hi-fi" brand.
I can completely agree with this. Build quality in cables is important and in some cases worth paying up for. When I make custom cables I use Belden, Canare, Gepco, etc., with Neutrik connectors, heat-shrink the breakouts, etc.
The problem is, for me to make a simple RCA to 1/8" stereo cable, I invest at least $20 in wire because I can't but 3', $15 in connectors, and 10 minutes of my time. The Blue Jeans cable is either about the same or slightly more, which is quite fair for duplicating what I can do myself with the exact same materials without my labor. However, an equivalent cable from Monoprice is $2.49. If you compare to BJC, you can buy between 12 and 17 copies of the Monoprice cable for the same price as one from BJC, considering the quantity price break, and ignoring shipping. The Monoprice cables are well built, the materials are of decent quality, and I've never had one fail. I've chopped them up for custom cables, and the wires are quite thin, but outside of being difficult to work with on a custom, the unmodified cables hold up well, and actually have slightly lower C than the Belden wire and work just fine. No, it's not Canare or Belden wire, but it gets the job done.
I have nothing against Blue Jeans, I admire their work. My own custom cables are done exactly like they do theirs, and there's no question the quality is above Monoprice. It's simply a question of economics, cost/benefit, and the Pareto Principle.