Just went for a two hour hike with a buddy in the half frozen marsh/hunting grounds behind the house in the dark. Took my two newest lights, the Quark MKIII 16650 in slate blue and Acebeam T27, one in each hand, and had a BOSS 70 in my pocket just in case. The Quark has a fantastic white beam and outstanding flood with the new Nichia 319, which made it excellent for seeing what's underfoot for picking a path. The Acebeam is a throw monster and quick bursts on turbo helped us scope for places to scoot across the wet areas and creeks. Got a little wet anyways since we had two warmer days so things started to thaw, but had a lot of fun anyways. Happy NFD!