Weird ain't it? We can have moderators/silencers here & Lasers (& hunt with NV) ! But...
For your task, roughly, there are two types to look at:
Both will give a wide, clean
beam (to me, that's an important criteria).
Incandescent will be the low cost option (with an IR Pass
The Da Torch (whatever!) I cannot comment upon
Most Lasers will give a very tight, concentrated beam/spot and are diffused in various ways to be non
-Target Designators (in the civilian world) but are still fierce little spotlights & deadly to high spec. tubes - with Gen1 they work wonders but if you don't need that 'designation' facility don't have it ! Monocular/googles see such a wide Field of View that you would only get a central IR lit circle with the best Laser!