This may sound like a stupid thread but with the money we invest in lights, lasers, optics etc etc what kind of batteries do you use to power these things? Surefire recommends you use surefire batteries (obviously there is a conflict of interest in that). Although I have my suspicions that Surefire may be saying that just to sell batteries I am too afraid to venture out and try new stuff. Corporate brainwashing and fear of breaking my $400 flashlight I suppose. What batteries does everyone use? Any superior product out there to the Surefire batteries? If there was better I would like to use it.