FQ, they covered both the points I would have raised,
1) mission, OK you want it for SHTF, Will it be for general purpose, or left by one window for the long shot you can't take with the shot gun ?
Assuming general purpose we come to
2) I don't like relying on batteries either, when I was in the National Guard I worked with the Supply Sgt. and in the field batteries were the one thing we NEVER had enough of, If the Army has trouble keeping up with demand where does that leave civilians when the stores are gone ? By the same token you do not want to be spending much time picking up your sight picture, so my choice would be either fiber optics or better still the tritium illuminated Fiber optics from Tru Glo, then, as they say about going to Carnagie Hall, practice man, practice.