Hi, I started using AQ cables quite a few years ago, and have progressed up the ladder in terms of SQ..I started with some Gibraltars and Colorado ICs. The improvement in SQ over (then) top of the line QED speaker cables was very marked, Over the intervening years I've upgraded to K2s and Sky/Niagara ICs. During Lock-down I've changed my power amps to monoblocs and retired the long K2s, using a pair of very short Nordost Blue Heavens I had lying around. I'm not sure yet about the end result SQ wise as the Nordosts have only a few hours of use compared to the K2s with Hundreds. The problem is that so much of cable choice is down to the way a cable works in a particular system, sometimes they make a big difference sometimes none at all, even changing just one source component can make a system that was previously sensitive to cable changes into one where they make no audible difference.
As with a lot of audio, the best bet is to listen in your system, and go with what YOU like.
As with a lot of audio, the best bet is to listen in your system, and go with what YOU like.