Customer Rating: 
Summary: Be safe, be seen, stay alive
Comment: Whatever else may be said about visibility at night, this light is hard to ignore. At night the flash mode is bright enough to be seen by motorists from a far greater distance than other "blinky" lights. It's definitely an attention grabber. It may be a pricier than most, but it's cheap life insurance and way cheaper than a visit to the hospital.
Customer Rating: Summary: Super Flash is Great
Comment: This light is awesome. With the bright LED blinking, it's hard not to be seen. Anything to help from being run over is something needed.
Customer Rating: Summary: Blindingly bright
Comment: It's nearly impossible to ride behind a rider with this light flashing. The bright LED is ideal for dusk when some daylight remains, it cuts through to following drivers' eyes. I've installed these on three steeds.
Customer Rating: Summary: Hands down one of the brightest taillights out there right now.
Comment: This thing is bright and well built. I have not had any problems with it so far. Because of its brightness, I use it day and night and feel much safer with it.
Customer Rating: 
Summary: Great design in theory, poor quality control
Comment: I have tested countless rear bicycle tail lights. No tail light so far is without problems. Planet Bike makes very good products. To be considered a great tail light a few requirements must be met: Easy, secure mounting, great optics for viewing straight on and from the sides, and a durable, quality switch. Planet Bike has a good, not great mount (the light tends to jiggle in the mount, which may simply be a quality control issue, not a design issue), very good straight on optics, and average optics from the side. Where is fails is in the switch category. I have purchased 4 of these lights, and two of them have defective switches. The light will change modes (from on to off to blinking) when you hit minor defects in the road. 3 stars for the light (very good straight on viewing, average side viewing), 3 stars for the mount, and 0 stars for the switch, arrives at the 2 star rating. They need to either use a Cateye type switch, or a Princeton Tec Swerve type switch.
