Favorite Flashlight: Currently the Leatherman Serac 2. It has a high beam, a low beam and runs on a single AAA battery which meets my main requirement for flashlights in general. If the flashlight doesn't use "common" batteries AA, AAA, C or D it's not the flashlight for me. I don't like paying big $$ for specialy batteries or have to hunt for them. I prefer batteries I can use in my flashlight, radio, portable cell phone charger or any other battery operated equipment I might be carrying.