It is true that the dominator steps down to 1200 lumens after a few minutes, but even at 1200 lumens, (50min runtime) it out-throws a UBR or UB3T (I have the UB3T) by a long shot! Even at the 640 lumen setting, it out-throws my UB3T! If reaching out hundreds of yards is your goal, then the Dominator is your light! I personally never use my dominator long enough to burn through the battery, but of course each person will have different uses. The UNR, UBR, UB3T, and UDR dominator are all great lights! The Dominator just.... "Dominates!"