In over 30 years as an audiophile, I've always had a mix of different brands of cables in my systems. Never all one brand. This method works best for me. For example: Here's the mix of cables that I currently am using with incredible results
Speaker cables, and one of my power cables = Brand: JPS Labs, Supercondutor 3 and Aluminata.
Interconnects, and my other two power cables= Brand: Audioquest, Pegasus XLR and Hurricane HC.
Ethernet cable= Brand: Shunyata, Sigma
Hope this helps.
Happy listening