Jake was wondering about this. I do not own a NiteRider Minewt Mini USB light, but would like one. I roll with Brandon who uses this as his main light and it does a pretty good job. nice and bright white beam. Not exactly enough to roll through a twisty single track at night, but great for being seen and seeing where you are going.
It is from NiteRider so you know it is quality. Thing is small and the convenience of charging via USb and diff mounting options make it a pretty functional light. There are diff models and some can be found for pretty cheap while others have multiple brightness settings and that bumps the price up.