Yes I am very framiliar with them as I have heard them before, but I've never owned them, For me since I am a gigging musician they are far to expensive for me, I tend to use evidence which are still pricey, or mogami, however I still use one of my original Spectraflex Fat-So-Flex cable I bought 15 years ago, as it sounds just as good as most other cables I have tried.
I would also like to try the Vovox cables, I might buy a set for my guitar cable and my internal speaker cabinet as well as the speaker cable.
thanks man!
Peace!
C