These are some of the most reasonably priced excellent performing cables. I've tried a few of the more budget cables (Analysis Plus Oval 12, Canare star quad etc.) and things are system dependent for sure. But I ended up going back to the Anticables Level 2.1 solid core 12g cables, and have found a sweet spot with them in my current setup. Also using some of their interconnects now too (mid level 3.1 ICs and 3.2 dig) with the best result so far. Replacing some that were more expensive. They have a higher end lines too, but these work very very well. I lurk here a lot and haven't posted in ages, but when I saw this post I was compelled to chime in not seeing any mention of them. You got some other good suggestions too, but these are so reasonable and damn good performing (190 bucks for 10ft pair with good banana plugs). Worth the experiment. Good luck
https://anticables.com/speaker-wires/2-channel#!/Level-2-1-Speaker-Wires/p/14618506/category=3449817