Looking to redo my rca runs while laying new carpet what's the best in opinion

Krystal RCA Kables

That's what I use, and have yet to have an issue. And haven't had any noise pickup through them.

RCAs are usually one of the lowest culprits of noise provided you dont buy the walmart special. t-spec, krystal, knuconeptz, whatever it is works

Ive had quite a few different pairs. I am not sure how much of a difference a better pair makes. Maybe someone with some large setup can chime in. When looking around at a bunch of different ones many of the bigger names do have different quality levels of cables. The cheaper ones are thinner wire, thinner coatings, cheaper connectors. Not sure if that is going to effect how they work, or if its more about how long they last. I noticed this when seeing JL audio, kicker, Stinger. I went with the Stinger 8000 series mostly because there was a good deal on amazon.

I use 20 gauge wire, twist pairs together in a drill, and solder RCA ends on them. I've done this for more than 20 years and have never come across any noise. It makes for a nice clean install: all cables are the right length and I use black for ground, white, gray, green, & purple for their respective positives.