@kereru Your welcome. I changed my order at last minute from the Concentus to Ximius, Ximius is their new reference I2S cable.
I expect you'll find optical conversion to be worthwhile, I started with the generic converters with the wall warts, over time went with Sonore, upraded the Sonore with quality LPS, DC cables, optical cables and Finisar 1475 transceivers. Even the generic devices with wall warts provided an upgrade at the time, knew potential for better existed.