I haven't considered the head lamps, though I don have a couple of old miners carbide lamps. :)
We use the lights around here and need a bit of range to reach the tree line, whenever we hear suspect activity.
I found and revived a light we bought at Costco a few years ago that holds 9 AA batteries and is 1,000 lumens.
The five thousand lumens and more would be outstanding. i find that everyone is offering high power flash lights now with four or more leds that supposedly add up to five thousand and ore lumens but they don't.
That takes about 35 watts in a rechargeable battery a lot more in common Alkaline batteries. Resistance in the battery eats up power.
A large single led i don't remember the designation can put out areal 5,00-6,000 lumens depending on batteries and regulator and heat sink.
5,000 lumens ain't cool, it's a hot fire.
All the "Puffing" or lying in advertising makes choice hard. So you Guys have bought some good flash lights. See soem good info here.