Im loving mine. Danger Zone has 2 half watt LEDs, Radbot 500 uses 1 half watt, and the Radbot 1000 has 1 one watt. I have 2 PB blinkies, I like the slow 'flashing' of the Danger Zone and Radbots more. They are less seizure inducing, yet still attention getting, also its easier to place the speed and location of the slower blinking light. IMO

I have ridden on good roads and cobble stone, and in the rain with never having the danger zone turn off, so mine doesn't have a shut off problem, like some early Radbots. Its attached to the seat post.