
I am in the market for a headworn light (lamp, torch, etc). Anyone have practical experience with these? I know I can research more specific forums (and I have), but wanted to throw it out there too.
I am giving serious consideration to these:
Princeton Tec Apex:

or the Petzl Tikka XP2:

The Apex is larger and has a seperate battery pack, but light output is incredible and used AA batteries, which I am trying to standardize on (radio, gps, etc all use AA). The Tikka is a general purpose light, smaller, not as bright, lighter, and uses AAA batteries. The Apex has a regulated output meaning consistent light for a length of time before dimming. The Tikka is unregulated, meaning the light level will be proportional to the battery charge.
I plan to have this in my truck for emergency use, and carrying it with me while adventuring outside my truck (e.g. hiking)
Any comments, reviews or criticism? I know Tom is always talking about these so I'd like to get his input as well.