Ok, I already know that the Beltronics STi Driver is the only radar detector in production that is invisible the all RDD's including spectre 4, however, is there one that can at least warn you that spectre is nearby so I can have time to turn off my detector? I like the STi Driver but the only thing it has going for it that makes it stand out is the invisibleness, other than that, it's basically a regular RX65. If you don't live in VA or DC, there's really no reason to buy it. I drive through VA to go from NC to NY maybe 6 times a year and just was wondering if I could at least get an alert. I'm sure the RDD's emit some sort of exhaust or emissions just like regular detectors do.