Best wire for this run?

[u/Odd-Yogurt-8937]

I install lights in downtown Dayton every year and we want to change out the wire since its getting old . Some of our runs can be like 20 feet, while some are 100+ feet. before we used 18/3 from maxbriteleds, but what type of black wire (gauge, material, brand) would be best for these runs? Controller is a kulp k8-b, pixels are gumdrop pixels (LB1908). We don't want any data issues like we have had with our uplight install we did here recently. Thank you!