Consider the activity you are taking on.
If you need to use your hands a lot, like rock climbing through caves, you should opt for a headlamp, rather than a handheld flashlight. You’ll be putting yourself in danger by occupying your hands in a situation in which you need them. Also if you are taking on an activity in which you are moving a lot, or running, your hands won’t be able to stay steady and aim correctly, limiting your vision and making you disorientated.
But if you need more control and precision with your aim of the flashlight, you should opt for a handheld flashlight. If it’s a slower paced activity, like hiking, hunting or camping, you will need a handheld flashlight to aim. Handheld flashlights will provide you with a broader scope of vision, which will benefit you greatly in these conditions.
As a hunter, you may also need a weapon mounted flashlight. Not only will this improve your vision, and thus your aim, but also with a tactical flashlight, you may stun the animal and prevent it from running making for an easier shot and therefore a quicker kill
Mount & Hybrid Adapter
Lastly, you’ll need to consider whether you want a mount or hybrid adapter. A mount adapter will attach the flashlight to a rifle or other instrument you have with you, making the use of two tools at one a possibility. Hybrids come firmly attached to the weapon and so can only fulfill the single purpose. So you need to consider whether you want a multi purpose or single purpose. Bare in mind that not all manufacturers of adapters make products to fit all flashlights or weapons.
These are important considerations as if you make this decision for the wrong reasons, such as laziness or absentmindedness, you won’t know it until it’s too late and you’re in the middle of nowhere with inadequate equipment.