The Lumintop FW3A is the result of two years of development on enthusiast forums BLF and TLF. It's one of the smallest 18650 flashlights, with three emitters, a tail e-switch, an open source firmware, and a firestarting 2800+ lumen burst mode. It already offers four LED options, with more to come, has great ergonomics, a fantastic user intefrace, optics that are nearly as easy to change as the battery, and no glue anywhere. Did I mention it's under $40? It's under $40.

The Overready BOSS is the most expensive flashlight I've ever reviewed, and the best built. It's also one of the least efficient at higher outputs, and falls well short of its claimed performance. That's unfortunate, because its Lux-RC buck/boost driver is one of its major selling points over other high-priced lights which mostly use simpler electronics.

The Sofirn SP21 v2.0 is a 1x18650 dual-switch flashlight with a Cree XP-L HI emitter, 222m throw and 901 lumens for under $30. It compares well to competitors that are twice as expensive.