I just returned from ShrewHaven, where I used my Mainbeam extensively for 9 days and nights. 4 bloodtrails, constant use at night while feeding the woodstove, in and out of the woods every day, and I am still on the same batteries.
The super bright mode is excellent for scanning the woods whil doing a grid search at night.
I also used the super bright mode to help a friend out of the woods. I could see he was coming down the ridge at the wrong angle, and he was going to miss the trail he needed by a wide margin (in the UP, that could mean miles of stumbling around). I spotlighted the correct trail from about 50 yards away, and he adjusted his descent.
Absolutely the best light I have ever owned.