I guess I am one of the lucky ones with the LED directly in the center. The beam is not as clean as the Quark AA, but it is far more useful in an indoor environment or when I need to find something dropped on the lawn/trees etc. The beam has a good hybrid of decent throw and just the right amount of flood without being too obnoxious. The runtimes and the clicky is what sold me. The runtime for the 30+lumen mode rated at over 8hrs is ideal for me on a single AA.
The last power outage I had, I realized that anything lower than 30 was not useful for my situation, and cannot light up a room to a comfortable level, no matter how much my eyes adjust to the darkness. My lights are always on Medium during a power outage, and low level maybe as a night light, or in a survival situation in my EDC. The medium mode is very impressive at 8hrs+, which beats the Quarks that I have, which I depend on for quality and runtime.
The only gripes I have about this light is nothing but a cosmetic issue. It would have been more useful if the clicky did not protrude out the way it does, so I can use it to tail stand, but this will prove beneficial when I have gloves on, so no big deal. And the last would be that it could have definitely used a clip, so it doesn't flop around in my front jeans pocket freely. It is big enough to be noticed lol! haha
Overall, this is the light I EDC, and being a single AA definitely helps because those cells are available everywhere. I highly recommend this light. I just hope that they fix this whole off center issue for all the other lights that weren't so fortunate.