Instant on has been around for years, and there has never been a good defense against it, if the cop is smart, not greedy and spacing/timing his hits. A detector can still work to warn, however, if it's operator is also smart. Those that are good with a detector know this, and can and do avoid instant on radar hits. Thusly comes the biggest problem with detectors for years-false warnings, especially when in an urban area, where they used to come so thick and heavy that one could no longer tell what was real and what wasn't. You beat instant on by detecting hits on other cars, a strong quick blast and then nothing. Or even a weak blast then nothing, if quite a distance from the source. Hills could mess up the signal, weaken it so that it seemed a falsie, till you topped the hill and joined the legions of contributors this radar method gathered. IMHO the biggest improvement, and most important, was eliminating falsing, so that one could trust the warning recieved. And this is probably where the V1 shines, the arrows indicate direction, helping determine whether the threat is real or not. Combined with the elimination of falsing, these improvements are what might get a detector back onto my dash/bars.