I guess that sounds like the beginning of a gun forum post but we get asked about this all the time. There are many things that I prefer to not divulge to customers because so much of this is about preference and the job at hand. If you are going to be using a flashlight for any length of time, and you have access to a charger, then you obviously want a flashlight that is rechargeable and has the appropriate battery packs. Most of the Police around here are using the Streamlight Strion and Streamlight Stinger because they can charge them in their vehicles or the office and know where they are starting from, unlike batteries that have been in the flashlight that are already diminished.
If you have serious use of a flashlight, the differences between having a flashlight at 80% vs 100% is considerable. If you are using streamlight flashlights for more than 8yrs, you’ll be able to relate to the improvements that have taken place with LED technology. I originally had a Streamlight scorpion with a xenon bulb that only lasted a few battery changes before it need to be replaced. I’ve had every ready Radio Shack flashlights that were tougher than that, but things have changed. Surefire came in stock because of all of the requests for Carbine and Shotgun lights. The Streamlight TLR-1 Flashlights are still king in this business, but Surefire has the hold on most AR15 and shotgun mounted lights. We are actively monitoring requests for Veridian lights, but we’ve had very little experience.