I use an Apex Pro by Princeton (200 lumen) sans the third strap for my BOB. And a Fenix P3D (205 lumen) for my EDC. Both are CR123 powered so I bought a small box at a heavily discounted $1/ea. - they are Japanese not Chinese branded. I just would like to find a decent carrier for the spares.

I also have a Fenix TK35 in the kitchen drawer.