I just replaced my old dynamo powered B&M lumotec N with the "new" IQ premium fly RT senso plus on my commuter bike, WOW! what a difference a few years of technology makes! It is fair to say it is probably double the light in both intensity and beam size, not a scientific test, just my opinion. The daytime "be seen" feature is good and the beam is bright and well controlled. The only drawback I see is the price, $95.00 from Peter White.