660 is great. I have it mounted on a cradle on a ball screwed to the A pillar in my 140. It is wired to a gtr200b radio and pushes frequencies into standby; that is the main way I tune my radio. Fantastic unit. I need a gdl to feed it attitude eand adsb data so I can get traffic on it. I have a 760 for the copilot spot in the 185. These things integrate really well with other Garmin stuff and are a lot of functionality for the dollar. Aera is for flying. Ipad for planning.