Cardas Clear Cynus vs. Neutral Reference XLR

Does anyone have experience with both of these ICs? I currently use NR between my pre and power amps and wonder if the Clear Cygnus is worth trying out. My system has been stable for a long time and I’m not looking to change the basic tonality. I would like a little better defined transients, such as found in acoustic guitar music. Will the Cygnus give me that or is it a more lateral move?
Would also love to hear thoughts on Clear Cygnus cable vs other Cardas wire like Golden Reference or other Clear.  
If you have units that are differentially balanced, the difference in sound among any XLR cable is very minimal.