Discussion: Head lamp

Hi guys,
I would appreciate a lot if you could give me some tips where to buy (online) good orienteering/adventure head lamp in the US?
I live in Colombia and in two weeks participating in adventure race and would need a good light. :)
Any tips?

Thanks a lot.
Jukka

ps. Let me know it you travel to South America. We have some nice maps and terrains here. Chears

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Thanks alot!!