Those who have problems, are always (rightfully) the most vocal, and are often referred to as the "vocal minority", but that does not make a bad product. There's always a minimum failure rate no matter who makes what. Be it cars, televisions, phones, computers, flashlights, et.al. there are lemons in all technologies. Ferrari's that break down months after purchase, a friends 4 month old Surefire that stopped working after a 2 foot drop (kitchen table onto ceramic tile), computers that don't turn on when you get them home / finish build or develop BSOD's within days or weeks of purchase / build. One of the most popular computer hardware manufacturers has about a "20%+ failure rate".... IF you were to believe the submitted ratings available at dozens of online shops to be accurately indicative of their failure rate. In actuality, when compared to the actual sales numbers, the real failure rate is only about 1 out of every 2,500 sold products over the life of the warranty period, even though I personally have experienced 5 failures out of 28 products from that manufacturer. That's what we're seeing here in this thread for Nitecore a perceived failure rate instead of an actual failure rate. I seriously doubt that any flashlight manufacturer can boast a failure rate as low as 1 in 2,500 & I would be surprised if even Surefire could beat 1 in 1,500. I've seen just as many complaints for Fenix and ThruNite as I've seen for Nitecore, far fewer from Zebralight, 4Sevens, & Surefire, but no flashlight manufacturer is failure free. I'M NOT SAYING TO IGNORE THE COMPLAINTS, MANY OF THEM ARE PROBABLY ACCURATE, AND DEFINITELY SHOULD BE TAKEN INTO CONSIDERATION BEFORE PURCHASE. What I am saying, is that ALL high production rate products ARE subject to the same failure probability. I would also say that you should look for failure patterns in specific models you're interested in which may be indicative of a problem at the plant that model is manufactured/assembled in.