Opinions on Wireworld and Acoustic Zen digital

Anybody have experience and comparisons on the AZ MC2 or the Wireworld Gold Starlight 3+.

I used the Wireworld GS 3+ for a while and liked it a lot. However I had it in a short length, just a half meter. Since then I have proved to myself that Empirical Audio's Steve Nugent is correct to recommend a 1.5 meter minimum length.

That made the Wireworld GS too dear for me, though. I went back to UHF Magazine's Audiophile Store, who sold me the WW GS in the first place. They say their new Atlas Opus is even better than the WW GS, and a lot cheaper.

UHF's cables page
That's right. 1.5 meter being the optimal length was discussed a lot four or five years ago on the 'GoN, but it hasn't been mentioned much lately. Not that I understand it, but there also seemed to be science to back up what people were hearing.
I remember the paper about the 1.5 meter thing; I seem to remember that the result was that 1 m. was suboptimal, not that 1.5 was optimal. 1.5 m. was better than 1, but (this was a while ago) I think I ran the numbers on .5 m & they came out better than 1 m, close to 1.5 m.