Considering switching to XLR cables,

Honestly I don’t think you’re going to hear a difference between RCA’s or balanced other than the fact that the balance are going to sound a bit louder without increasing the volume. If you were going to try balanced, I would recommend from the selections you listed above the following;

 Zavfino Arcadia

If you are looking at other brands of cables I agree 100% with what @v-fi said, try the Veritas Cables Argentum R (RCA) or Argentum X (Balanced).