After using Tikkas, I can recommend the Petzl Reactiv+, though its now been replaced by the Actik models.
I use it with the Petzl CORE battery, carrying a spare, so if needed I can get 4-5 hours of maximum light.
When its pitch black the amount of light it can provide, off into the distance ( narrow ) or wider and shorter for the more tricky sections, is truly heart warming.