Hello
We ran out and bought a 3D 625 lumen version. Using new fresh Alkalines.
It's always nice to to have a flashlight that has simple battery loading, three D batteries in a tube, one after another. It's so easy to be in the dark, try to unload, and load fresh barteries in complete darkeness vs the difficulty of a Nitecore EA4 or even more difficult Fenix LD41, that has the separate battery carrier, eg wet hands on the rain gets on all contacts easier.
I have loaded all three flashlights and the 3D maglite is the easiest.
I did a comparison between the three flashlights and the brightest is the Nitecore EA4. Even at a simple 300 lumens (4hours run time constant 300 lumens brightness), the EA4 gave a much brighter illumination of distances from 1-100 meters.
It it was also astounding that the EA4 was better in the furthest long distance(beyond 100m) vs the maglite too (adjusting the focus to try to beat the nitecore EA4).
In short:
Brightest
EA4 at 300 lumens noticeably better then mag 3D 625 lumens. we can say perhaps mag looked like a 200-250 lumens brightness in terms of ea4.
Fastest battery reloads
Maglite is the easiest to change batteries, even in total darknesss (scary in forests or urban neighbourhoods without street lights-so faster reloads are great). Use a "two fish" bike Velcro adaptor, to use a maglite on a bike, works nicely, check if it fits the 3D, some unnamed brands do fit it easily like mine.
We hope this helps you, if your thinking of buying the ml300lx 3D 625 lumens Maglite.