I agree with most of what Nyctophiliac said, especially that egrep really doesn't like this light! :laughing: Things I see a bit differently are that when I need more light, usually medium is plenty, so I use high the least. I also have tried using the ADT a bit, and still don't like it around the house, but I think it may actually be useful walking a trail in the woods. No loss if not, as the ability to select which mode I want directly without scrolling through modes justifies the use of the accelerometer.
Let me put it this way, as a feature that may not get used by all owners, or even many, and does not get in the way when not wanted, I think the ADT part of the interface makes for a much more potentially useful "bonus" feature than any kind of flashing mode. Apologies to the designers for calling what they surely consider the "main" feature of the light a "bonus", but I know I am not alone, and this is just my experience so far over a short time with the light in limited environments.
The beam is the best part of the light, very useful for most tasks, as long as you don't expect to be able to use it for spotlighting things at a distance. Also agree on the low on the AA, not interested in the other battery types because they won't go as low as I want.
There have been a lot of reviews and a lot of people with these lights already, and they don't seem to have any real quality issues. One reviewer did manage to flatten the little leaf spring in the bottom of the battery tube. I think the thing to keep in mind with regard to that is that the light will come on well before the head will stop turning. If you crank it until you feel it stop, you are mashing the spring more than is necessary. This is aggravated a bit by the inability to see if the light is coming on right away in low and medium due to the "soft start" feature. This may cause people to keep turning the head thinking they have not gone far enough yet when it is in fact starting to ramp up. I wish this was either a faster ramp, or I would be fine with completely eliminating the ramp feature all together. Likewise, while the slow ramp down in ADT mode helps to keep the light from bouncing around in intensity to quickly, I think it is a bit too slow - more of a crawl than a sashay.
Bottom line is I like it, it does just enough that none of my many other lights don't do that I am glad I bought two, and would by a third before I would sell one.