I am not familiar with the quality of most of your components (though I am familiar with the brands), but I think your system would be capable of letting you hear the differences.
This is my theory...Vampire is a major wholesale source of bulk wire. They actually supply the wire to many of the smaller cable companies. The other wires you tried may have actually purchased their bulk wire from Vampire, so that means the only difference would be in the terminations and connectors. Your ears may be telling you the truth.
You may want to experiment with a copper interconnect to hear a more drastic difference.
This is my theory...Vampire is a major wholesale source of bulk wire. They actually supply the wire to many of the smaller cable companies. The other wires you tried may have actually purchased their bulk wire from Vampire, so that means the only difference would be in the terminations and connectors. Your ears may be telling you the truth.
You may want to experiment with a copper interconnect to hear a more drastic difference.