Lacking in the sense that it's not there, but as someone who used the classic Petzl Gloom for about 20 years not lacking in the sense that it's a whole lot of actual use...
I use an Alpkit Gamma now. Cheaper, lighter, batteries last longer, switching between the wee LED and the big one gives you useful variety of beams.
The Zoom is one of the All Time Gear Greats and many of us have been guided through Epics by them, but they're really historical now. Current LEDs do the job better, don't require spare bulbs and last a lot longer on a set of (lighter, smaller) batteries.
Pete.
Posted: 18/03/2011 at 18:35