I've done many cable comparisons over the years, while I may start off with short listening sessions and A/B comparisons I've found that making the best decision only comes from long listening sessions over several hours and days. I know the cable is a contender if I stop analyzing and instead just get lost in the music.
Another reason that it is important to do long listening sessions over several days is that cables often sound much better after having at least a 24 hour period in which to just sit and settle in.
Another reason that it is important to do long listening sessions over several days is that cables often sound much better after having at least a 24 hour period in which to just sit and settle in.