These speaker cable articles have been well-known for as long as 19 years and there's certainly no startling info that would indicate that there's audible benefits to be found. I first read of the Davis work in the July, 1994 issue of Audio where he wrote a similar but not entirely identical article as his 1991 AES paper(I wasn't an AES member at that time). One new point was that he emphasized "There are real, measurable differences among speaker cables. However, for average systems and short cables, these differences are at the threshold of audibility"(p.42). Then in the July, 1995 Audio, Villchur(developer of the acoustic suspension AR speaker)wrote "Speaker Cables, Measurements vs Psycho-Acoustic Data" , testing the Davis "threshold of audibility" and found that applying data on just noticeable differences to those very high frequencies in the Davis measurements indicated that they were "almost always below the threshold of audibility"(P.37).
As to the DIY cable article, it's generally well-written, but there's nothing to show that the procedure there results in anything other that creating the equivalent of an 11ga cable. Inductance of a parallel set of conductors is directly proportionate to the distance between their centers and inversely proportionate to the radius of each conductor. So, the lowest inductance is a result of a very closely spaced pair of thick wires. You'd think, therefore, that no one would be silly enough to sell a cable composed of very thin, but widely separated conductors, but at least one supplier(which won't be identified, but whose initials are Mapleshade)offers a very thin "Double" pair which it recommends be separated a foot or two on the way to the speaker.
The way to get low resistance is an adequately thick conductor for the distance involved, with the two conductors very closely spaced to allow inductance to cause no audible effects. Standard lamp cord of an appropriate gauge(I use 16ga)does this job as well as anything.
