I installed a Inakustik Referenz USB cable in my system 2 weeks ago. At first it sounded brighter than I was expecting but after letting it burn in for a few days it has settled down nicely. It sounds much more open than the AQ Carbon I had been using and I couldn’t be happier with it.
I also ordered the RAL Prophecy a week ago. Hopefully I won’t have to wait too long for it but after reading the thread linked below, I’m not so sure.