I still use a Streamlight Ultrastinger. Ive used this same light since I became a cop about 7 years ago, and I like the decent light output (its not as much as some of the new LED lights) and the size. I like being able to tuck it under my armpit when im talking to a driver and its length is nice if you want to hit something. I always have a non rechargeable light on my duty belt as a backup though. I currently carry an Elzetta Bravo or Charlie model on my belt.
I'm using a Streamlight Polystinger DS for my main duty light. I have some Gerber "cortex" thing that I was given for T&E as my backup light.
I think the Streamlight Stinger DS LED HL probably has the best balance of performance, reliability and price.
For a program light I would agree. My old job went that route since we could get chargers into all of the cars, belt holders for the people who wanted them, guys could buy their own back-up light and have two on hand in case they got stuck on a long term scene like directing traffic for a few hours, etc.
Even so, the more I use the Estrella the better I like it. It's a very flexible general purpose and effective light.
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I have the LE code for the Estrela. Now I'm just waiting for them to be in stock on the website.
Just a dog chauffeur that used to hold the dumb end of the leash.