C J Campbell wrote:
GPS yoke mounts are the way to go. Setting a GPS on top of the dash is
likely to interfere with your compass.

To be honest, as an emergency backup device, the Garmin 196 does not have
any special advantages over any other aviation GPS. If you were using it all
the time, especially with the new terrain feature, then yes.

Just for the record, it's an obstacle feature and doesn't show terrain.