Who says cables don't make a difference?

I tried 3 Interconnects direct from my DAC to amps.  Two amps were integrated, one was not and volume was used with the Audirvana player on my PC.
1  Moon Audio Black Dragon 3 ft.
2  Moon Audio Silver Dragon 1.5ft.
3  Better Cables Silver Serpent 1.5 ft.

A few weeks ago we compared #1 to some Amazon Interconnects and 3 out of 3 of us, two were blind noticed quite a big difference.  This time, 1 and 3 sounded about the same.  Then we tested 1 vs 2 on 3 different amps. In every cars we could hear the difference.  3 - silver was brighter.  It is what I would choose for detailed listing, but it would become fatiguing much sooner.   My buddy liked the 1 set better in all situations.  I thought 2 were better on one system.  For the money - #3 was a great way to go.

My net is they absolutely matter on a clean system vs the very low cost cables.  $20 vs $300 mattered.  $100 vs $300 not so much.  And silver (bought used on eBay) near double the price were different.  But different like how you might tune an EQ.   I have not compared to anything higher priced.  I expect I might discern a difference. 

I was surprised that there is a difference, but there is. 

I'll add, I have a DAP that I bought an inexpensive 3.5 to RCA (Y) I was using.  I also incorrectly used a balanced higher end set from same DAP to same amp.  The balanced sounded so much better.  I thought balanced was why.  Reading more, that was a no-no.  Anyway, that Y was left in another location.  I pulled out another Y and was surprised it sounded as good as the balanced.  Both were pretty inexpensive - I'd guess from memory ~$30 and both sounded very different.  So now I am looking for a good Y cable.