I have been doing quite a bit of reading and research into these LED flashlights (torches for some of you!) and other than the type of LED employed, the lens and reflector assy. is crucial as well. I have compared large arrays of white LEDs tested against a single or 3 LEDs in a quality, properly designed reflector and lens assy. The large arrays performed poorly in comparison to even a single LED torch of proper design. Before I'd go wasting my time and money on a handful of super-brite white LEDs, I'd opt for a single 1.5w Nichia or Luxeon Star, or even their 3watt versions coupled to a good reflector and lens. Properly done, you'd end up with a "tactical" quality flashlight over something that merely floods a small area with bluish-white light. For around $35 US, MagLite sells a three D cell flashlight w/ 3watt Luxeon LED, housed in a CNC milled, aircraft aluminum grade housing with a real glass lens and adjustable reflector.