In reply to pipcollier:
>
> Best for night navigation.
What type of navigation are you talking about?
I have two headtorches, both for navigating at night:
Petzl Ultra - for Night Orienteering. Very powerful but also very heavy and expensive when compared to a 'normal' headtorch.
Petzl Myo - for hill use. Light and compact, a lot of useable light. The difuser filter is really good as it lights up the terrain around you rather than a focused spot, very useful for relating terrain to the map.
I had a BD Icon but lost it, I'd say it probably had a longer beam than the Myo, but the difuser on the Myo makes it a much more useable headtorch.