I hope I am not off the point.
I do use many measurements to decide if I am interested in a product. For example: Speaker impedance, sensitivity. Amps- power rated into 4 ohm/ 8ohm.
And cables I look to see what they consist of. How they are made. There is a thread going now on Audiogon that describes $5000 cables as the holy grail. Yet it is made from copper wire sleeved into cotton and finished off with cheaper connectors. Yet poster's claim it sounds fantastic. To me it is a nonstarter but if I could actually hear them then perhaps my impression would change.
Is there new technology used? I admire those who think outside the box and come up with creative, innovative items.
Once I zero in on those perimeters then I use my ears/ mind to decide.
ozzy