The Responder II is an awesome little lightbar. Being a college student, I couldn't afford a huge lightbar, a much as I would like. This lightbar fit my needs. It's bright (42,000 cp.), and fast. My experience is that moving objects get peoples attention better, usually not dependent on brightness, to a degree. A member of the squad i belong to made a clear cutout in front of the V-mirror, and it really puts out a nice flash!
(Of course, this coupled with the Dashlaser-M, and wig-wags will tend to attract attention, :) )
Brian Wilde
RPI Ambulance
Pottersville Vol. Fire Co. Pottersville, NJ
Far Hills-Bedminster Fire Dept. (Union Hook & Ladder) NJ