I'm thinking of getting a GPS communicator for fair weather for hikes in the Rockies/Southern Utah where service may not be present. My first question is are they worth it just to have for emergencies? I like AllTrails for navigation.

Mini $400/battery life for days
66i $414/battery life 25-30 hours/2 satellites
67i $545/battery life 115+/5 satellites

Accuracy would be nice, but I'm more concerned with connectivity in Zion/Rocky Mt Park/Moab/Goblin. I don't see the advantage of the Mini…

Garmin 66i vs 67i vs Mini2