We just switched from Trimble to Garmin in our Cessna 185. It's no more accurate but the display and controls are far better. I don't know the unit but can find out.

We are also getting some kind of subscription gizmo that will do automatic flight-following, if I remember correctly. It will squirt weather current maps to the display, too. The weather is supposed to be tied to the GPS coordinates. I ain't no pilot so I'll have to ask for details if you're interested in this.