I be give my 2d maglite as a gift from my brother . the light have prove to be very reliable and have never fail I . maglite do produce very high quality and durable flashlight . they should put more development into brighter bulb . I have several surefire flashlight and they completely blow this light away , while be much smaller . I have a rechargable surefire duty light that be smaller and weigh 1\/3 as much as this light . at the same time my Surefire produce 10x the output of this light . I have put a mag lead module in it for more output . now I can justify the size of the light . it will put out about 30lumen for about 20hr now . the problem the light have in stock form be that the light would reach 50 % light output in 1 hour of runtime . the remain output decline throughout the 10hr of runtime and eventually be produce relatively weak light . it do not make much sense to haul 30oz . of weight for the light output that this light put out after 5hr of runtime . I would like to see mag do some research into some brighter bulb . I really like the heft and feel that this light provide . I give the 4d maglite a lower rating just because it be ridiculously large for the light output it provide . with the led module in this 2 cell light it match the output of its larger 3-4 cell brother yet be more efficient . I still prefer incand . light though so I would like mag to put brighter bulb in these . in stock form Maglites get blow away by they competition .