I have a Reactik+ that I purchased a few years ago. The automatic brightness feature is cool, if a bit jarring at times as the the headlamp changes to respond to the reflectivity of whatever is in front of you. Sometimes you just want something stable, not changing all the time. But it has a mode for that, too.
The built in red LED is great. Terrific for use in the tent, or when you don't want to wake your mates up.
It says New Reactik & Reaktik+. Was there a new model released since mine from a few years ago?