Jeff,

Following the success that "BOGMONSTER" on this list had with using the uAvionix in his Kitfox, I purchased the same ECHO UAT and SKYFYX for our plane. Simplicity of installation, cost, utilization of the existing transponder, runs both frequencies (UAT and Extended squitter), bluetooths to a tablet for ADS-B In and the fact that the company is not a jonny-come-lately in the market as they have been making miniature ADS-B out products for drones for quite a while all played into my choice. Setup is simple and can be done with either an android or ipad

Don't have it installed yet but hope to do that after things warm up a bit out here.

You can get on their website and look up the installation manual if you are interested in how that works.