I've been using a Dinotte Quad Red for about a year and a half now and love it! I have motorists all the time tell me they could see me very far away. I've had numerous others ask about the light and where they can purchase it from.

I ride in medium to heavy city traffic during daylight hours (very bright sun in the summer) and generally pedal 30-40 miles a day. The light is great and I've noticed less close calls / buzzing since adding it. Yes it's pretty expensive as far as lights go but I won't ride without it..