First thing is what are you using it for?
I have quite a few headlamps, and for the most part I would recommend a Petzl, as the just work well
. But I have a $12 Energizer headlamp I use for hunting that's been dunked in the water I don't know how many times and it still works fine. It's awesome even though it's only got some 300 lumens, but when you're using it you're really only illuminating what's within maybe 15 feet of you, otherwise I have a actual flashlight that I use for anything further.
I have a PrincetonTec 78 lumen light that I have in my tactical kit that has a red lens window ensuring that I cannot ND white light with it, and that's all I really need for patrol based movements.
https://www.amazon.com/Petzl-Compact...8&sr=1-12&th=1
https://www.amazon.com/dp/B000RLJZX0...roduct_details
https://www.amazon.com/Energizer-Mid...1zcF9hdGY&th=1