Definitely Cardas Clear. I've had both in my system and the Cardas USB is clearly (no pun intended) superior. Warmer yet more detailed.
Cardas Clear or AudioQuest Carbon USB cable
I'm using a short Cardas Clear USB cable from a Mac Mini to an Ayre QB-DSD DAC for Roon, The DAC displays bit rates up to 192. Would an Audioquest Carbon cable be better?