I took 4 lights out my side garage door where it is about 50 feet to my back fence.
Light 1: 3D M*g with a Whitestar Krypton 3Cell bulb and 4C Rayovac Alkalines aboard. Also has an Acrylite diffusing lense. Lights the fence GREAT. About 10 feet across at 50. Also able to hit all the trees within my view as well as lighting up the area between the houses across the street, some 100 feet away.
Light 2: 4D M*g with a 4cell WS, 5 Alk C cells (mix of Ray and Walmart branded batts) and Writeright textured film on the lense. Essentionally the same as the 3D. Perhaps a bit more diffused, perhaps the batteries aren't as hot - it seemed a smidgen dimmer. Still good performance due mainly to the Writeright!
Light 3: Everactive Lantern from Walmart. With 4 Energizer D cells and a KPR113 4.8V .75A bulb. This has a beam that is a tight spot with decent spill. Not NEARLY as good as the M*gs!
Light 4: Garrity Lantern. With 4 Energizer D cells (could use a 6V lantern batt) and a Teal Everled. Similar width of beam to the M*gs, hard to say if as bright or more/less so. Seemed to hit the trees all well too.
I don't have even a good clue about the runtime of these lights. I figure several good bright hours (3-5 perhaps) with common batteries.
The easiest to deal with is the 3D M*g, the Garrity Lantern handles well.
Another idea would be to get a 4C M*g and use a 3Cell bulb in it. Don't forget the Acrylite lense or Writeright film no matter which M*g you might choose.
One last thought. Almost a month ago now there was a shooting next door. For about three hours that night I used an Elektrolumens Starlux 3D 1Watt LED light to look for blood, bullet holes on houses, cars parked some 100 feet away etc. I didn't ever feel I REALLY needed any more light than that, and it has a 24 hour runtime to 50% brightness!!!!
Wayne has some current lights that are similar, go to
www.elektrolumens.com
Hope I helped!