While I have been a lurker on this forum for a few weeks, this is my first post.
All of the comments have been good, intelligent, remarks about flashlights. Several have posted about www.candlepowerforums.com. I should like to heartily recommend that site.
But, as a member there for about 5 years, I warn you that if you really dive into it, it can become addictive. You can become, like me, a flashaholic; plus spend way more than you ever intended to.
FYI, for my hiking and camping needs, I usually take two lights, at a minimum, one a small keychain light just bright enough to see a keyhole. The other a Fenix E01 (about $15) that yields 10 lumens and runs off of AAAs or rechargeable AAAs. It gets around 11 hours in what they call sun mode and another 10 hours in moon mode.
But, depending on the circumstances, I have a dozen other lights to choose from, if I wish.
Regards to all,