Both of my GPS units have been Garmin and worked well. They are light years (okay, 15-20 actual years) apart but each did what I needed. The newer one is an Oregon model, 650 something. The Rhino does add a radio and other features, but I didn't need the radio function for what I was doing.

Lots of folks here are using an app for their phones instead of a GPS now (using the GPS chipset in the phone). I just downloaded one of them last week and will perhaps play with it. Supposedly it works well without cell coverage.