“you just base it on the length….1m is really short for a power cord, so there’s not much flexibility. I would go with a 2m just based on that. My 2 cents.”
It would depend on the proximity of components and outlets in a given audio system and the particular cable’s flexibility.
I use flexible silver wire power cables that are 1 meter length. They are ideal for my situation (And much more neat than the longer cables that they replaced).
Charles