Ok to put this all in perspective people have hiked the entire length of the AT with a couple photon 2's or a single 9v battery attached to a Paklite. I think somebody did the entire PCT then the PCT on the same 9v battery.
A lot of respondents haven't actually read your requirements. A single CR123 battery could cost you $8 at the restock supply points, and as you said you won't be able to recharge.
If you aren't going to hike for a couple years you should put off the Headlamp purchase till the last minute. Technology is advancing very rapidly in LEDs. Not so much in tents, etc. However the EOS is a very fine light, and what I would recommend today.
I think maybe you are on the wrong forums, CPF will lead you down the (very brightly lit) path of light overkill, you should check out:
http://www.whiteblaze.net/forum/index.php
A lot of respondents haven't actually read your requirements. A single CR123 battery could cost you $8 at the restock supply points, and as you said you won't be able to recharge.
If you aren't going to hike for a couple years you should put off the Headlamp purchase till the last minute. Technology is advancing very rapidly in LEDs. Not so much in tents, etc. However the EOS is a very fine light, and what I would recommend today.
I think maybe you are on the wrong forums, CPF will lead you down the (very brightly lit) path of light overkill, you should check out:
http://www.whiteblaze.net/forum/index.php