I’ve spent a lot of time fooling with cables in addition to building high end speakers professionally. It seems silly to hook up $300-1k cables to a speaker that uses plain copper speaker wire internally. The same thing applies to power cables. $1200 power cable that connects to a wall outlet that’s been wired with the cheapest copper the builder could buy.
I use a quality oxygen free 10 gauge wire on my 4 ohm speakers, and 12 gauge on most everything else. Ray Kimber’s wire excels in long runs or in a noisy environment. Most speaker wire runs are short distance. You don’t need a heavy gauge for that. Folks spend gobs of money on wire because it makes them happy knowing they have the “best”.