I love all maglite that I own . the 6d light be incredibly powerful . Perfect for a airport beacon . : - -rrb- seriously , the adjustable focus allow for wide flood to tight spot with a range that allow you to see considerable distance with clarity at night . would be perfect for neighborhood watch . the one and only complaint I have with maglite be the quality of the manufacturing of the bulb . they last very long but the accuracy in which they be shaped and attach to the bulb 's base during manufacturing be often poor . this result in uneven light distribution in the beam . the bulb in this particular 6d light -lrb- one of several that I have own and currently own -rrb- be tilted in its base by a very visible amount . when the light be focus to spot , this seriously affect the ability of the MAGLITE to cast as much light at a distance because much of light be reflect by the MAGLITE 's reflector off to angle that prevent it from contribute to the center of the beam . this affect its power and range of illumination . however , I happen to have spare bulb and select one that be manufacture more precisely , install it in the MAGLITE , and the beam be perfect . so if you get one that shoot much of its light off to one side of the beam center , look for another bulb -lrb- there be a spare in the base of the flashlight -rrb- and swap out the bulb . in addition to bulb that be tilted in they base -lrb- not the socket of the MAGLITE that receive the bulb , but the base of the bulb iteself -rrb- , the size and shape of the nipple where the glass be form can also cause issue with light distribution , though not as severe as bulb that be attach to they basis incorrectly . this can often contribute to uneven light distribution in the beam . I have many maglite of all size , except c-cell , and this problem occur relatively often in the d-cell light , but not in all instance . I learn to keep some extra bulb on hand not only for when one burn out -lrb- again , they last long -rrb- but also to replace a poorly-manufactured one in a new MAGLITE . I think that MAGLITE should work on the quality control of its bulb -lrb- which may be manufacture by someone for MAGLITE -rrb- . regardless , the bulb issue , if you have one , be easily correct be replacement of the bulb . I would still recommend maglite to anyone . they be tough , long lasting and powerful . just do not let battery sit too long in the light without change they with fresh one . if they leak , they fuse to the inside of the light and you will not get they out .