Not sure what type of batteries you like to use most. Then go with the HX5 Flashlight, which is compatible with not just standard alkaline AA, but with rechargeable NiMH or rechargeable Lithium 14500's as well (NiMH and Lithium not included). With the lithium 14500 cells, the lumen output jumps nearly three times as bright as with the alkaline battery. Also unique to the HX5 Flashlight is a two-way clip that makes it easy to clip in either direction on your pockets or even the bill of your hat. This light can easily transition from flood to spot modes with one hand.