I used to own a Surefire P3X Fury, but I sold it recently enough to have a clear memory of it's beam profile. At 1000 lumens, I think it produces something like 18,000 to 20,000 lux. The splash back from the hot spot can be a bit overwhelming while maneuvering in tight spaces. By contrast, the Elzetta Charlie has a similar lumen output but a wider beam profile at 12,000 lux. In my opinion, the Elzetta is better inside but the Surefire has a little more reach outside. Surefire's Intellibeam feature is clever, though, and would seem to remedy the problem of close range splash back.
If you get the Intellibeam, just remember that anyone else holding a flashlight can dial your output down to 15 lumens just by shining their light at you.
