Really love my 2014 version fenix PD35. 18650 or CR123s. I prefer the 3400mAh 18650 battery from nitecore with it. 960 lumen with 1 18650 and 1000 lumen with 2 cr123s according to fenix. I dont tell any difference really just looking at them 1 at a time. In both cases turbo mode is crazy bright. Mid level is about as high as i ever go excpet when playing around with it.