Here's a review
http://ledmuseum.home.att.net/rebel2.htm
However there are lots of smaller, better lights out there
www.flashlightreviews.com and the above website have tons of info/reviews.
My personal choice would be one of the Dorcy lights
or the UK 4AA eLED.
Flashlightreviews tested the runtime on that one and he stopped the test after 10 hours.
www.candlepowerforums.com is also a great place to look.