I have been using Ping with my 720 for well over a year in my two airplanes. Works good, except in my plane with a Narco Mark12D, I get radio noise from it on some frequencies. I have not noticed that in my other plane with King radios (155 & 170B). I have had this in the past with other stuff in the plane with the Narco, the Mark 12D has given me good service life but it does not seem as well shielded as the Kings.