I've been flying recently with a new (to me) Aera 795 and a GDL39-3D. Honestly, since I set that up I have only taken my iPhone 6 with me in the plane. The GDL39-3D feed attitude and ADS-B traffic/weather data to the 795, which is super bright and easy to read even in full sunlight. Recent software updates improved the connectivity between the 795 and GDL39. I was using bluetooth at first to connect them but bought the power/data cable for it, and used that to hook the audio into my intercom, which is terrific for the terrain and traffic audible alerts.
Before that, I flew with the iPad as my display for plates, traffic, weather, etc with Garmin Pilot. Still using it some in the plane but on the iPhone and not as much. Always useful as a backup in case vacuum goes south, of course, but it's for situational awareness only. The IFR navigator does all the real work (GNS 480, which they can have when they pry it from my cold, dead hands (as they say)).
iPad is good, but I like the reliably fixed position (RAM ball mount attached to the panel in reasonable field of view for pilot) and brightness of the 795.