Pelican lights are good and use regular batteries, available in AA, AAA, C and D battery. bright and indestructible. also good for explosive atmospheres as you would find in mines, oil field, or even after earthquake etc... where you may find burst gas lines. we use them a lot on tankers and oil field. water and gas proof... almost AB proof. (AB is an Able Bodied Seaman. or deck ape. stick one in a closet with a bowling ball and that ball will get F(^$@d up! or... 3 steel balls, they will lose one, steal one and break the last one)
if you haven't noticed I really don't hold a high opinion of ABs.

anyway, good lights, streamlight also puts out some lights with regular batteries. good luck.
http://www.allpelicanflashlights.com/http://www.streamlight.com/deepwater