Favorite cable brand.

I prefer used cables.  List price for some of these cables is ridiculous.  Cables are high margin items for sales folks.  I’d rather save money and buy a lightly used pair second hand.
I use Audioquest rocket series in my system.  I like the way my systems sounds.  So I don’t spend money or time swapping them.

If it sounds good, be happy.  

Signal cable 
Affordable yet excellent!
improved my sound greatly

Ansuz C2 power cables, Sablon Audio USB and ethernet and WAVE Storm BNC. Considering trying Sablon Audio power cable and XLR interconnects as I have been impressed with the Sablon Audio cables I have tried so far.

I use Cardas cables throughout my system. I have tried several other brand of cables, but I seem to gravitate back to the Cardas sound and build quality. I am currently using Cardas "Clear" interconnects, coaxial, and USB cables with an old set of Bi Wire Quadlink speaker cables. I would like to move up to their top level "Clear Beyond" cable but that will have to wait for a while. lol

I am very impressed with these cable lines:

1) Zen Wave...Dave's cables

2) Graceline by Black Cat

3) Nordost.