any surefire flashlight 50~$100 will do! I bought the $50 model? its like 65 lums and works great for everything I need. Don't buy any flashlight that has "charge mode" I like the ones with batteries so when power goes out I can swap out more in if I need to.
SHTF vs TEOTWAWKI you ask? SHTF, just some crap on the ceiling and walls, TEOTWAWKI end of the world as we know it. Orignally made by 9mm/®™©