Hey mate! Can you define “best performance”? Do you mean highest peak output, highest consistent output without the need to regulate the heat, highest output with thermal regulation at room temperature? What sort of environment are you going to be using your flashlights? Do you have a specific use case? Are CRI and Tint important above all else? What are your CRI and tint preferences? All these things are important. If you would clarify, I could gladly point you in a direction. I can’t guarantee it will be the right direction, but hey, it’s all about the journey (unless it’s a frustrating one, then the kids will keep asking “Are we there yet?) :smiley: