Surefire,
Stream light,
Inova.
All are about a bright as the Hi beams on a car.
The Inova is neat as you can set it real bright or a second click and it is down to 30 Lumins.
Also comes with a belt clip that can be stuck on your ball cap as a head lamp. Uses the 123 Battereis.
A freind was showing me his this past weekend and I have a few on order with him. One for me one for Dad and one for my friends B-day comming up.