I have been a big fan of head-mount lamps for a long time - since I used to work as a deckhand on the Mississippi River back in the early 80's... The LED models are a big improvement over the big 6V flashlight style lamps I used back then...
Most of the LED models these days run on 2-3 AAA size batteries, which IMHO is the cheapest size to maintain. If you want lower key, there are "baseball hat" style units that typically seem to have 2-3 LED's built into the brim, they are nice but use a relatively pricey "coin" style battery...
Either style is great IMHO, as it puts light where you are looking, and leaves your hands free to do other stuff... They are a bit of a pain when dealing with other folks, as the "light where you look" approach does mean that you are shining your light right in the eyes of anyone you make eye contact with, but this is easy enough to handle, either turn it off, or hold it in your hand....
ex-Gooserider