There's no best. There are tradeoffs.

My favorite flashlight for everyday carry is the Zebralight SC64c LE. It's compact for using an 18650 battery, it's easy to find the switch, but hard to press by accident. It has decent color rendering. Its driver is relatively efficient.

Some people would hate it because it doesn't have a charger built in or because the max output is under 1000 lumens. For a different use case like search and rescue where there's a bit less emphasis on size, it's not optimal compared to options with bigger batteries and optics.