Palladium is an inferior conductor compared to coinage metals (Cu, Ag, Au).
Silver is bright only if one hears past 100+ kHz.
Capacitance and inductance of IEM cables being any significant factor is a long-abandoned myth. Resistance does matter in a very straightforward way.
Coat hangers (rich and diverse iron alloys) are proven/acclaimed winners of blind cable tests
NiceHCK had a good chuckle with "audiophiles" with few alloy cables of their...
(Repeating, just to be pedantic, and cables rhyme with IEMs like Trifecta, as per other hard-core "myths" along the great classics of Hans Christian Andersen).
On another note, not ordeing from Ali Express (banned them from my existence, finally), I opted to get "Project Red" on Amazon (one-day shipping, tomorrow will it come). $50 purely to compare with Castors - so "gather children", as Crinnacle nicely put it ( mature audiophiles are also more then welcome, of course) - I hope to tell you the story (limited time pending) about how Project Red can compete with toasters, pardon, Castors