I, too, like my Garmin Varia rear radar/light. Not only does it alert me visually and audibly to a car to my rear (or multiple cars) but the light also blinks as someone approaches giving the vehicle a visual indication of a bike on the ride. Okay, in an urban environment it might alert too often but I'll take that. In a more rural or suburban environment it is really helpful. I will note that when paired with my earlier Garmin 1000, I could generally not hear its beep. It works fine with the Garmin 1030+. It also alerts to bikes catching up and in one instance a train on a parallel track!