The first tactical flashlight I actually owned was a Surefire G2 Xenon bulb flashlight. I was very impressed with how bring it was, considering, the previous tactical flashlight I had was a D battery USGI flashlight with different lenses. High output was pretty cool, but those Xenon bulbs did not last very long and I did not like the idea of a flashlight that needed bulb replacements as much as battery replacements. Eventually the LED conversions came out and I upgraded to that and then I was really impressed at how much a the technology had improved. I have always been a fan of varying output flashlights. I still go back and forth about whether or not it’s good to have a rechargeable or battery light, but even that has changed and there are a growing number of flashlights that have both options.
The G2x is basically the new version and has a slightly different body, but with a 320 Lumen output with a 15 Lumen low. Once most people start using these lights, they quickly realize they don’t need all that output in most circumstances and 15 Lumens is enough to get you around in the dark the majority of the time. Surefire Flashlights have an excellent reputation of being sturdy even though there are less expensive flashlights out there. We still the vast majority of Law Enforcement are sticking with Surefire and Streamlight due to their warranties and durability.