I just got mine today
It is still light here right now but I can't wait until dark.
I turned on the light in a brightly lighted room and the reflection off my white walls almost blinded me
This is by far the brightest thing I have ever seen. I keep my M6 by the bed but this thing would blind an intruder for more than a few minutes I think.
Oh, it also comes with two batteries so you can charge one while using the other and the whole thing fits nicely in a carrying case.