[pax]

I think a flashlight that size is the equivalent of planning to carry a rifle around for self-defense. It might be the best when you don't consider portability, but on a practical level you're simply not going to have it when you need it.

Personally, I prefer a 60 lumen or brighter LED light with a single 123 battery. Such a light is small enough to be with me all the time, bright enough to blind an attacker, and durable enough that I'm not going to be replacing bulbs every time I drop it.

pax