wrote:

I've got a Petzl Tikka headlamp in the car, along with a couple of
flashlights. The advantage of a headlamp is the beam is focused exactly
where you are looking rather than trying to position a separate light.
The flashlights, one of which is 1000 lumens, allow for a wider beam.

I agree that a headlamp has advantages, as does a magnetic lamp, where one
of each might be perfect redundancy for a nighttime emergency at the side
of the road.