Ok I LOVE my high cri 123 quark but It (or should i say ULTRAfire) left me in the dark at work the other night. I work for the RR and was in the middle of nowhere walking my train, I bring out the quark with ultrafire (just charged it before my shift) and put it on bright (not turbo) I get a WHOPPING 10 minutes before It goes out. I turn it off and back on and put it on the 3rd setting which buys me another 2 minutes then the battery is completely dead, No problem. i pull out the spare in my pocket and put it on 3 and it TOO goes dead after minutes. SO now i am in complete darkness. I ended up using the flashlight app on my phone to get back to the head end. PLEASE tell me the AW batteries are better as I am getting ready to order a couple. What kind of run time on a Quark 123 am i looking at on bright? ALSO when the protection kicks in, can u turn it off and wait a few mins and get a LITTLE more light??