I am thinking my best options are an IMR 18650, or possibly one of the newer AW P18650 (2600).
I believe I read that a normal 18650 will drop out of regulation rather quickly, and not offer optimal brightness, because the light does not use a boost driver and it is pulling so many amps on high. Is this true?
I currently have an EagleTac 18650. Should I stick with that or will one of the above be a better option?