Hey Rodge, Yes I am using the newer, thicker DNM wire for 'normal' speakers.
I should clarify, when I say it lacks the last octave, I am being unfair, because this is only in comparison to my Downsize Audio 2" wide copper ribbon cables. They have an extra octave in bass compared to most speaker cables, not just DNM.
The Downsize Audio ribbons are the best speaker cables I have heard so far, but they are 10 times the price. For the money the DNM kicks ass.
I have found that solid core is better than stranded in either IC or speaker cables. But then ultra thin ribbon cables are better again, but more expensive.