"It depends" is the most accurate thing I have seen posted yet.
It depends on if you have any interference problem. Few actually do.
It depends if you have some ground loop fault you are not fixing and want to band aid.
It depends on the quality of the execution of the drivers and receivers. Some good, some terrible.
It depends on how much money the salesman wants to make.
It depends if you have a new Purify/Hypex ilk amp that is by definition a balanced architecture. Best if the source is also balanced. Many modern DACs are. ( and many the DAC is, but the IV is not and a balanced driver is just hung onto it. )
It depends if you feel the need for bragging rights over actual performance. Even Chord is se at the Qutest level. Balanced is not necessary for most systems according to Mr. Watts.
If you need boutique cables, It depends if you are a snake oil believer and feel the need to find some magic that Mogami, Cardas, Belden, or the studios who use miles of said cable do not know.
If making your own cables, how easy to assemble Cannon vs Amphenol vs various others can be a royal pain. I am not really a fan of XLR connectors. At audio frequencies, terminal strips can work just fine and are widely used in the field.