One of the best features of the Pelican light is its dual-filament bulb. All these lights overdrive their bulbs in search of an intense beam, but the price is a short bulb life - typically the bulb burns out on your second or third set of batteries. The price of this redundancy is an oddly shaped beam, because the unused filament casts a shadow. The bright spot is about the same size as that of the other lights, and considerably less bright than either the RCD or UK400. Miss - Less intensity.
Maximum intensity indicates the brightness of the center of the illuminated area.
Like the Ikelite, the Dacor UL 1000 uses a bulb with a standard PR-style base, so it's easy to find some kind of replacement almost anywhere in the world. The beam's bright spot is round and fairly even. Its maximum intensity is slightly less than the BriteLite and somewhat yellow in color. This indicates that some of the bulb's output is lost in the invisible infrared spectrum. Bulbs shifted toward the infrared normally last much longer than the bright white ones, however.