+1 Tikka Plus for more active use like predawn bike rides, hiking at night, true outdoor illumination for active use.

+1 Petzl e+lite for stationary uses like reading in bed, map reading in car or outside, beacon attached to clothing, tent or pack for people close by to see at night.

I couldn't get by without one of each but if had to have one would have the Tikka first. I do carry the e+lite in my EDC due to its low volume