My friend asked me to come with him (aka have another guy just incase a sticky situation arose) on a whitewater rafting trip with his wife and her 2 female friends. The water level was low, there were lots of non-moving flatwater, and we had a ton of mileage to cover to make the campground before nightfall as planned. The campground was a small clearing where the cliffs broke and overshooting it would mean trouble. The girls were more interested in lounging in the sun than paddling which left me to awkwardly guide a whitewater raft by myself. We got caught in the moonless night and between trying to navigate shallow rocky sections and constantly pulling the raft off rock, this light was the only one out of 5 with enough throw to navigate a course down the river and desperately find the campground. The light output and waterproofing was everything I needed to get out of this hairy situation.
I've also used this whitewater kayaking in class 3 rapids at night. The waterproofing and tough body making rolling with this a non-issue.
I've also used this for night climbing, both trad and sport. It lights up the wall as if it were daylight. Night climbing with this headlight has made it my new favorite way to climb. A little sphere of light in a dark, dark night.
The new model is 200 lumens and although my 130 lumen apex works just fine, I'm going to buy it anyway.
On a sidenote... I had to buy a headlamp with less output for getting around the campsite, hiking, and my favorite night climbing. This light is just too bright for those applications. It works for hiking, but you really don't need that much light, and a lamp with less power and longer life means less batteries = less weight.
P.S - anyone know what led/driver they're using in the 130 & 200 lumen models? I was thinking about switching out my 130 for a more powerful one. Not that its feasible, but imagine running a Luminus CST-90 in it (2700 lumens, 700m throw, 13.5 Amp max drive)!