That's always good to try stuff for ourselves.
Regarding cables, i've actually asked and deep dived with an engineer which for a living works with signals, circuitry, etc etc, and he confirmed that a material can't change the sound properties of a signal. There is no such a thing that a cable that would make an headphone stage wider or make its signature warmer, and this is already known for sure since measurements are a thing.
Of course, a good cable will just make the HP sounds as it should, compared to a bad cable (bad welding, cheap materials, etc etc) and will surely make the experience better if it is ergonomically better.
In the end, while knowing all of this I myself have bought some decent cables (100-200 usd) just to make sure they are well crafted and to have better ergonomics. But a good 100usd cable and a great 500usd cables, if they are both well crafted and works properly, will sound the same (in the sense of changing the frequency response).