Cheap Streamlight 61302 Argo HP C4 LED Headmount Flashlight, Black Review
This is a well constructed, weather resistant, rugged very bright headlamp. It is ideal for cold weather hiking since the lithium batteries tend to keep their charge longer than conventional batteries in the cold. The C4 lamp easily lit objects 100 feet away. The on/off high/low intensity button is all sealed so water will not get in. The battery container is also well sealed as is the lamp assembly. It comes with two sets of head straps - one for use on your head and the other for use on a helmet. It is comfortable and not too heavy.
I originally bought this for a different reason - indoor use. I work with certain ultrasound equipment that requires a dimmed room, so dim that I couldn't see the area I was working on well. This headlamp was too bright for this use. After using the light, my eyes were adapted to bright light and I couldn't see the ultrasound screen well.
The only design flaw that I encountered is that the on/off button does not have any hard cover or shield on it. After rolling it up and throwing it in my back pack and stuffing in a lot of gear around it, the button was pressed on and the light left on for a day. If you pack carefully, this should not be an issue.
Overall I like this light and recommend it. I live in Maine where the winter days are cold and short. It is great for evening cross country skiing or winter mountain climbing. The lithium batteries are more expensive but reduce the weight for the amount of power they provide. I recommend buying a 10 pack of batteries, since the price is substantially less per battery than buying a two pack at local stores. They last for years.