I make my own power and speaker cables, but I can’t be bothered with soldering so interconnects I buy. Of course I spent years and barrelfulls of money chasing the perfect boutique cables, but after my audiophilia nervosa disappeared some years ago I no longer hear those significant differences I used to hear.
These days, rationality restored, my choice for power cables is Supra LoRad for their excellent shielding, and speaker cable from German manufacturer Sommer Cable.