I use a 2600 lumen Betty TLS from Lupine. These seem to be actually measured lumen, not just the rating of the lamps. Not that I know much about tit but I need a good flashlight for nighttime walks in the woods where I live here. It can be so dark I can't even see the gate from a few meters.
This thing burns holes in the night I can tell you, they're made for speleology.