the Nitecore overall track record is pretty damn spotty. They sell a LOT of lights thus when a LOT of things go wrong with them we read about here a LOT. More so than any other builder that I know of. Sure, Fenix track record isnt perfect either nobodys is but when comes to mass produced high output LED lights Fenix track record is on a far higher level than NC. Been a lurker then member here for a very long time NC has had the most complaints Ive read of yet admit to have bought a few of their lights. None have failed on me. The 2015 NC lights as evidenced by my frigging outstanding MH20 seem to signal a new gen NC for me. The MH20 has become my most used light and is always in my front right pocket UC35 in rear left pocket remaining front left pocket and or belt remain open for specific lights I need for more specific tasks. For instance Ill quite proudly wear 3 lights front right, left rear and an SR52 in its sheath on my belt for instance. Love night spotting across the Potomac where I live the big Olights have been a godsend for night fishing