I've had some 1, 3 and an 8 LED (T type) flashlights. I was never really
impressed with brightness or battery life. I bought a Dorcy Luxeon
flashlight that runs on 3AAA batteries. It has the LED at the bottom of a
rather deep parabolic reflector. I must say I was impressed when I first
turned it on : )
I was expecting abysmal battery life, but is remains at high brightness for
a decent amount of time then drops to a middle level for a long period. It
gradually dimmed, but still produced usable brightness when I checked an
found the batteries very week. I replaced them out of fear of leakage. LEDs
allow much better low battery performance than incandescent.
This flashlight has a useless and annoying (to me) blink mode. You have to
press the button twice to get the flashlight turned off.