I was initially a little suspicious of Fenix being just another cheap Chinese made torch company, cramming in a lot of functions and claiming powerful outputs and long run times at a very (almost "Too") reasonable price. On a like for like price comparison you will normally find that Fenix boasts IPX8 water resistance where a competitor might claim their torch is simply weatherproof for example. (Now IPX8 is an ambigious term as it simply means better than IPX7 - Submersible to 1m for 30 mins, but even so it is the highest IP standard available for rating.) Even their lowest priced ~£11.95 Fenix E01 Torch offers IPX-8!
At the top end of the price range is the Fenix TK40 which offers a blistering 630 lumen output on its brightest setting and a heroic 1200 min run time on it's most economical settings. Unlike a lot of torches at the top end of the market the TK40 can also run on standard AA batteries as well as the high performance Ni-MH batteries it is really designed to run on, although you will not get the same performance on the AA as you will with the Ni-MH.
There is also a wide range of tactical accessories for Fenix torches from remote trigger switches and red filters to traffic cones and white light diffusers which make the torches highly versatile and suitable for everyone from recreational and professional shooters, to traffic officers and even photographers.