I got a Surefire M910 from a member here. I got home late last night and opened the package, most of the lights were off inside the house because my wife and kids were already in bed. I put the batteries in it and lit up the whole downstairs. Then I went and retrived my surefire 6p off the duty belt to compare the brightness, walking throughout the downstairs shining the light at different place.......next thing I know, my cell phone is ringing in the kitchen, I walked out to retreive it, opened it and before I could get a "hello" out, the caller said, "Luong, someone is inside your home on the first floor!!!" I advised my neighbor that it was me, he said, I thought I saw intruders inside your house with flashlights!! I opened the front door to find him in his pj's in 20 degree weather with his cellphone and pistol. Luckily he didnt call 911 first... Just though I would share that with you.