Finally bit the bullet and had ADS-B installed in my '47 Luscombe. She needed an avionics upgrade anyway; Narco 155 xpdr and EdoAire 556a. Put a Garmin GTR 225 Comm and GTX 335 xpdr in. Use an Ipad mini 4 with iFly app. Mounted in the panel with an Airgizmo mount. I carry a backup Ipad mini 4 in case of problems and paper charts. I'd like to get ADS-B in, but am confused with all the choices. Not much room in that cockpit. What's everyone's recommendation?