Do good power cords have to be stiff?

a great power cable that is very flexible: e.g., VH AUDIO Airsine.

The new ifi powercords nova and supanova are very flexibel...

In regard to having a power cord of heavy gauge (in the vicinity of 10, more or less), how many amps (or watts, probably easier to add up or check) do folks stereo systems require from the mains?

My own modest setup (Class A tube amp is the biggest draw card) I’m at less than 500 watts.

At 120 V, that’s a tad over 0.4 amps.

At 240 V, about 0.2 amps.

Off topic, I know, but kinda related.

+1 Pokey77, (Audio Envy)

I’ve also read from a few manufacturers that if your power cords seem too stiff, it might be that your equipment is too close to the wall, and there are lots of nasties in wall you don’t want too close to your gear...