Having been critical of both AirNav's and Kinetic's marketing in the past, I have to say that I'm pleasantly surprised by the latest RadarBox flyer. Apart from the odd grammatical deficiency, and a tendency to overdo the sniping at the competition, it's a pretty fair effort. The only part I think could do with improvement is the rather woolly description of which aircraft you are and aren't likely to see using ADS-B, and a rather confusing reference to other data link technologies which aren't relevant to Mode S.