Well, I have a few.
My pocket light is a Streamlight Protac that takes 2 CR123A batteries.
My main everyday light for work is a Streamlight Strion HL rechargeable LED.
My light on the side by side or in the truck is a Streamlight Stinger HP rechargeable LED.
My favorite work for working on tractor or truck or something is a Snap On rechargeable flood that's rechargeable and magnetic swivel.