Submitted by Oz
There is another American-made flashlight that rivals Surefire (I own one of each), both from Goncz Hi-Tech.
The Goncz is smaller and lighter in weight, but has very similar output characteristics, is made of similar aircraft-alloy aluminum, has a similar array of accessories, and generally stacks up pretty well. It is also a lot cheaper...
ED -- Oz, In looking over the Goncz website, I assume you're refering to either the "M" series tactical lights, or the E-1 lithium LED light, as the remainder of their line is rather large (10+ inches.) All of these lights use either 6v or 9v lithium batteries, and burn times range from 20 to 120 depending on model and output setting.