+1 for the novatac
easy to use and switch from blinding bright to very dim. and dial it up and down for just the right amount of light. and it has strobe and SOS modes hidden away in the menu too.
runtime on low is something like 19days continuously (on all day and night)
Fenix lights are pretty good to, i like my P1CE, but its runtime is a little short
and surefires are very good solid well designed flashlights.