When I first read about upgrading power cords, I was skeptical. I tried anyway, and was surprised that it could make a subtle difference. However, I thought that the asymptote was quickly reached—I couldn’t hear any improvement after the $100/meter point. I haven’t really listened critically to power cords in the last decade or so. I buy them based on features—I favor them being somewhat flexible and gripping tightly, and since I have had hum problems in the past I want them shielded. Currently, I use a mix of PS Audio and Pangea. My two cents.
