Garmin Catalyst offers an advanced mode with live audio coaching and 3 key takeaways for improvement after each session without the PDR's requirement of putting the SD card into a separate laptop for analysis and seeing lap times between sessions. Exported videos don't have overlays currently but overlays are there for playback on the built-in screen and that export with overlay feature may come in the future. I would recommend looking into it. I haven't used one myself.
https://www.camaro6.com/forums/showthread.php?t=582558