Yep good stuff on the horizon. That Zebralight is going to be killer efficient on a primary. It will be tough to test considering the PID stepdown but I bet an "area under the curve" analysis reveals it's about as good as it gets right now.
On the other end of the spectrum, the Nitecore looks optimized for 18350 which is awesome and forward looking in my opinion. Two switch feature also appeals to me assuming it works in the following way: Power switch only turns the light off and on. Mode selector switch only functions when the light is on. Power switch will always activate at whatever mode was selected at power off. It would be really cool if there was memory when holding the mode selector switch. The red light is an awesome additional but not if I have to select my way through blinky modes to get there.
I'm especially interested in the "twisty/momentary" switch aspect of the Foursevens light. Do we think this will behave like a "tactically correct" Surefire switch?
Looking forward to reviews.
-G