I would take a look at the Fenix L series.
I dont have personal experience with the LD05 but it looks like it might fit your needs.
Fenix LD05 High Intensity LED Penlight 2xAAA 100 lumens!
I own the L2D and love this light.
Fenix L2D Digital Q5 Premium LED Flashlight Premium Q5 180 Lumens! 2xAA