Ravemen CR600. It's very bright and his a nice pattern, the only downside is the short battery life. It's a good light for if you're starting or finishing your ride in the dark, but don't plan on doing the whole ride in the dark. Before I got my Lezyne 1400+, with it's exceptional battery life, I'd have to cycle between the dimmest setting for climbs and the bright setting for descents...just to maximize the battery.