That's the main thing and I always wanted to have tough flashlight which I can use without getting a heart attack when it gets a little beaten up .
FWIW, I'm a General Contractor who also does Structural Pest Control; attics and crawl spaces.
Don't worry, pretty much any light will do you fine. Things break and which ones that do break, is unpredictable. For my everyday pocket carry, I have a JetBeam RRT-0. For the briefcase, I carry two lights, a modified Surefire 6P with a ThruLite P60 XP-G R5 drop-in and a box-stock JetBeam Jet-III M. And I feel totally comfortable pulling each one of them out on a job to fill in those unexpected shadows. This, whether walking rebar in the lower foundation of the pit area or crawling an attic/foundation crawl space in a high-end home.
I keep in the truck boxes, extra batteries and a replacement bulb should dropping the Surefire P6 cause the bulb to blow or if using the light as intended, causes the protected light's batteries to shut off due to low voltage.
The point, daily use on construction sites, ain't as hard on lights as you think they are. This coming from somebody who has thirty plus years in the business and has never had to replace a flashlight since going to high-end lights.
Warning, finding a site like this makes you want to buy more-and-more, better lights.
Hope the above helps.
:thumbsup: