You answered your own question.
An ideal wire should have 0 resistance, 0 capacitance and 0 inductance.
But that does not exist.
So, try and find one with the lowest capacitance. All things being equal, the capacitance of the wire is probably the most influential at audio frequencies. If you want to be really fanatical about it, separate the normally dual speaker wire into individual ones and place them away from each other.
But, this is an exaggeration. Human ear will not perceive any difference on wires shorter than about 50 - 60 feet.
An ideal wire should have 0 resistance, 0 capacitance and 0 inductance.
But that does not exist.
So, try and find one with the lowest capacitance. All things being equal, the capacitance of the wire is probably the most influential at audio frequencies. If you want to be really fanatical about it, separate the normally dual speaker wire into individual ones and place them away from each other.
But, this is an exaggeration. Human ear will not perceive any difference on wires shorter than about 50 - 60 feet.