I have a friend and fellow bike commuter who works at bike shop and he told me about this light. He has two of them on his bike and said a friend followed him home in a car and said he was very visible and the lights were very bright.
I looked at them yesterday and they are bright but it seems to me that the viewing angle has to be just right to be considered "bright". If a motorist is off to the side just a little, the light doesn't seem as bright as most other LED lights.

What do you think? Should I replace my double Vistalite Nebula 5 setup that I've had since 2001?