I have read interconnect and cable reviews in The Absolute Sound and Stereophile for decades. You must understand the nomenclature to read and understand The reviews… but I have found them to be very accurate. But you must understand your own system as well.
I have spent many hundreds of hours comparing and contrasting different interconnects and cables. And one sideline… in general, Belkin and Blue Jeans are most similar to the free interconnects you get with a component. These are not an upgrade. I have tried them.