I have had an inreach for a while now and it is the ultimate in giving you piece of mind. the minimum plan is about 18 bucks per month, no contract, you can activate it and deactivate it whenever you want.
I pay the minimum plan every month so I can always have it at the ready, for quick trips, short excursions, and when I'm on my boat in the ocean. When I know I'm going to be on an extended trip and I will be out of cell range for days on end, I pay for the top plan (about 60 bucks) so I can have unlimited texts so I can check in back home with people or whoever is house sitting for me. I highly recommend getting one, it's worth every penny if you're a "piece of mind" guy like me.