I've bought several "Ultrafire" Asian knockoff flashlights from ebay. They advertise 2,000 lumens, have a strobe etc. and are blinding bright. You can get them with a single rechargeable battery and charger for about 12 bucks.
I'm a flashlight nut and I have used these guys for years without an issue.
I do agree on the pepper spray, but you wanted flashlight info.
http://www.ebay.com/itm/3PC-2000LM-U...0AAOSw9r1V7~2w