My next probing question. Maglite, Petzl or another? Personally I have a 4D Maglite which I use for basecamping where vehicle access is available. To make the torch slightly lighter I use rechargeable batteries but this brings its own problems when the charge starts to go. My best investment was to upgrade my Petzl Zoom to a Petzl Zipka. No longer do I need to find the big 4.5V Flat batteries (although in it's later years I used an AA battery adapter). The light from the Zipka is very white and the battery life seems to go on for every. In time I have had this torch I have only replaced the batteries 3 times and use it for everything, including walking the dog.