Should I upgrade my speaker cables?

Those fidelium cables caught my eye, what you guys think of them?

 I found a gauge converter calculator and 18 strands of 22 gauge translates to 10 gauge all together 

It is easy to remember that every 3 steps of gauge double the area.  In this case:
gauge 22 - 1 strand
gauge 19 - 2 strands
gauge 16 - 4 strands
gauge 13 - 8 strands
gauge 10 - 16 strands

In addition it is enough to remember that middle of the pack gauge 16 is about 4 mohm/ft.  According to double area rule gauge 13 will have 2 mohm/ft and gauge 10 will be 1 mohm/ft

If you have that kind of budget you can buy used TYR 2 or Valhalla 2 Speakers cable USED....

I thought about that , but I need 2 sets, and it’s hard to find just one set, any ideas where I can get used Valhalla 2? I heard any Heimdell 2 are better than Valhalla 1 but not better than the 2

I’ve been casually reading this thread because I’m curious as to what 4000 watts and a 90dB speaker sensitivity have to do with speaker cable.  On the loudest of musical passages, in a large room, how many transient watts are passed to the speakers.  I’m going to specify that nobody is to have permanent hearing loss and no drivers will be destroyed in the process.