Seeking recommendations for DAC to amplifier balanced XLR cable


The amplifier is Musical Fidelity M6si and the new DAC is RME ADI-2 DAC FS, both great devices. At first I connected them with AQ Colorado 1m RCA. I happen to believe, however, that balanced cabling, which is possible between these two devices, has theoretical advantages over single-ended. I ordered Sommer Epilogue XLR cable from Germany, plugged it in yesterday and compared... Unfortunately AQ Colorado beats the newcomer. I have 2 choices: stay with AQ Colorado RCA (since it already plays great) or look for a better XLR cable. Any advice here is welcome! 
ghjuvanni
... which suggests that spending any more than about $100 per pair is a waste of money. Possibly Mogami Gold would similarly be indistinguishable from the Sommer I am using 
The best way to know for you and your ears is DO the test and IF the less expensive stuff is the sonic equal, sell the others and move on
In this case, the less expensive (but balanced) is not just equal but preferable (albeit very slightly). Will be selling the rest
OP I mean this in the best way possible- discernment of overdrive, saturation, overload, clipping is a listening skill worth cultivating along with the incredibly more subtle differences between well constructed and engineered cables.
not sure I would rush to the later before ....