@hilly230
My personal experience with 75 Ohm digital coax cables connecting Node2i to Qutest are limited to Tributaries and Transparent. In both cases those cables are terminated with RCA connectors, using an Audioquest RCA to BNC adapter to mate with the Chord Qutest.
The Tributaries Delta Digital cable is decent, but as mentioned in my earlier post from 2 years ago in this thread, felt it was outperformed by a smidge by an Audioquest Vodka Toslink cable. Since that posting I acquired an entry level Transparent coax cable which to my ears outperforms the AQ Vodka Toslink. Today my Node 2i resides on my desktop connected to KEF LSX speakers via the aforementioned Toslink. My Qutest still resides in my main rig, but connected to a Roon Nucleus via USB. If I was shopping for a Coax cable today, among the brands I’d consider would be Transparent, Wireworld, Audioquest and DH Labs.
On a budget, DH Labs in my experience offers very good price performance. If you don’t have a local dealer to work with, where you can maybe borrow and check out some different cables in your system, you might want to reach out to the folks at The Cable Company. I’ve had good dealings with them, and among other things, they have a cable lending program. Good luck. Hope this helps. And do let me know how things work out for you.