In reply to MONONOKE:
I chose between the same two torches, and opted for the Alpkit.
I have no complaints; it's a great lamp at a great price. I've had it out for days without charging, no problem, and at full brightness it can light up an entire pitch.
Downsides; it's not as intelligent as the Petzl - the 'wave to switch on/off' function activates if you wipe your brow, adjust your helmet, or walk under a low branch. Which is funny the first time, annoying the second, and switched off the third. Also, I've found the rear battery pack can end up sitting lightly on my ears, rather than clamped around my head. Not a problem for climbing, but you might prefer the compactness of the Petzl if using the torch for running.
Hope that helps