It’s too simplistic to say unbalanced or balanced interconnects sound better. It’s all about the design of the gear and synergy. I’ve had gear where I hear no difference or unbalanced sounds better but I have had gear that throughout the chain, it’s all been designed to sound it’s best balanced and all the pieces are truly balanced. I have seen a noticeable sound quality bump on balanced gear that’s designed to be used balanced and truly balanced.
Most of the time it’s easy to tell if gear is truly balanced as the manufacture goes out of their way to call that out, as already pointed out in this thread, a truly, fully balanced piece is more expensive to design and implement. The manufacture wants you to know.
Let your ears be your guide, good luck.