So I just bought a basic airplane. An American Yankee AA-1. I'm going to need ADSB out and I don't think the Sky Beacon is an option. Maybe the Tailbeacon will be but I can go with a Garmin transponder ADSB out for $3K. ADSB in and out for $5K. If I was just going with the transponder I wouldn't spend the extra $2K. But right now the airplane has no nav option at all, just a single com radio, so I was thinking of springing for the Garmin GNX 375 combination transponder with ADSB in / out along with a WAAS approach-approved GPS. That's $8K plus installation and I can probably work something out which one of the avionics guys on the field so the installation doesn't set me back too much. Obviously, this is an expensive add to a cheap airplane but I can always take it with me when I sell and if I sell. Meanwhile I'll have some functionality that I would like to have as a backup. What do you all think?