I carry an ARC "AAA" flashlight. This unit looks like a Mag-AAA, but is slightly shorter. It has a single white (or any other color you want) LED bulb. It runs at near-constant brightness for five hours, and is only $25.<br><br>If you turn on a Photon and an ARC at the same time, the Photon will be brighter at first, but after five minutes, the Photon will fade and be dimmer than the ARC. <br><br>Also, the Photon takes expensive button cells, and requires a screwdriver to change the batteries. The ARC takes an "AAA," and installs just like a Mag light.<br><br>As far as durability, I do not know what the Photon is made out of, but it looks like plastic to me. The ARC is a solid chunk of aluminum.<br><br>Check out www.arcflashlight.com, or read about the history and evolution of the ARC from www.candlepowerforums.com.<br><br>BTW: Both the ARC and the Photon are about the same brightness (or better) than a Mag AAA with new batteries.<br><br>