Nice light...don`t have the Infiniy Ultra so cannot compare. I did compare it to my wide beam Photon 3 I drug out of a drawer...bouncing them both off the ceiling the Photon lights the room better...but pointing around outside the Arc project farther as would be expected. I wonder if the larger reflector might have mated well with a wide beam. The AAA I was told was cursed by rings with the wide beam...but the AA might have worked. The wide beam Photon still shocks me (and everyone who sees it...makes one hell of a first impression) to this day when I replace the batts....I really don`t use it (Photon) much as I am afraid to damage it, and it can`t be replaced. I will enjoy the ability to stand the Arc on it`s tail...clever design.