I know this thread is a year old, but I wanted to chime-in because I have
both an Aera 660 and an Aera 760, and this is the right thread to do it. These are both current Garmin units, and new firmware just came out this month for them which fixes a couple bugs.
I also have a Garmin GDL-51 - which adds Sirius XM Satellite music and weather to these units (as well as my iPad mini)
The GDL 51 Sirius XM receiver has the hard-wired data power cable P/N 010-11686-40 interface to both units, and the Aeras are also both hard wired with their respective "bare wire" harnesses.
It all meets in a plastic junction box, which is two-sided taped under my panel (3M auto body tape) and a cigarette lighter pluy powers the whole thing..so it's not "hard wired" to ships power permanently.
I can control the XM music with the Aera's, and I use the XM satellite weather extensively on both Aeras when the weather gets sketchy. I'm using an Air Gizmos mount for the Aera 660 in the center stack...and the 760 is normally mounted on the R yoke. We run an iPad mini on the L yoke.
What I like about the Aera 660/760 units:
They don't overheat and shut-down like the iPad
The screen is bright
Those are honestly the top two reasons...sometimes I cannot see the iPad mini, then it shuts down becuase the sun is hitting it and the cockpit is hot.
Continuing on...they both have a Garmin interface. So it's feel and workflow is just like the big 750 in my center stack. Why not just add the Garmin GDL 69A to feed XM weather and music to my GTN750xi? I could...but that unit is over $6,000! Plus installation. I get the exact same weather with these portables for much cheaper.
These units can send flight plans and changes to my flight plan to my panel mounted GTN750xi and vice-versa through the FlightStream 510.
Enroute, if there is any weather to monitor, I keep XM RADAR on the 660. In good weather, I keep the nearest airports on the 660 so I can use the 750 for moving map. In mountainous areas at night, it makes a great dedicated terrain display. I also use the 660 to control my Sirius XM music channels.
Dislikes:
The screen resolution on the 660 is good; on the 760, it's pixelly...when comparing to an iPad, its not nearly as good...but it is super bright. With that stated, I'll take a pixelly bright display I can see over a high-resolution one (iPad) that I cannot see in bright sunlight.
These units cannot file, activate, amend, or close a flight plan. At all. You need an iPad to do that or use the phone. You can connect them to WiFi (or your phone) on the ground to get internet weather if desired
These only allow one bluetooth connection. I connect them to my Flightstream 510's Bluetooth (Streaming card added to my GTN750xi used for WiFi database updates and Bluetooth connections to other devices) so they get traffic. That's why I went with the hard-wire for the XM to the GDL51. If I were to use the bluetooth to the GDL 51, then they could not get traffic.
These units have nowhere near the full capability of Foreflight. But the interface just works...and works identically to Garmin certified avionics.
Sadly, an iPad remains necessary. I dream of the day someone builds an aviation grade "hardened" iPad with a bright screen that doesn't overheat. Plus I also use Garmin pilot (on my iPad) to stream and log engine data to my iPad from my GI-275 EIS. I'll be sending it to Saavy for analysis. Spotting an impending engine issue on a piston single through data analysis is not a bad idea, and it is amazing for us to have that ability on a bugsmasher, just like the airlines do.
If your avionics shop balks add putting portables in a panel in a certified aircraft, use Policy statement letter PS-ACE-23-01 titled "Subject: PS-ACE-23-01; Installation of Mounting Devices and Wiring Integration for Attachment of Portable Displays and Electronic Devices in Normal, Utility, and Acrobatic Category Airplanes" dated 6/18/2012 - which should be easy to find with a quick Google search. That document even allows hard-wiring to ships power; my shop would not do it, thus my use of the cigarette lighter plug. My wires are also retained with Velcro straps instead of zip ties. It's all little "kludges" like that which shops sometimes use to make everything "temporary" to keep the regulators happy.
Here is my Aera 660 in my 1991 Socata Tobago:
