SPOT satellite tracker/SOS device

[sparky33]

Does anyone have experience with or recommendations for a satellite tracker/SOS device, such as a SPOT Gen3?

I am thinking of picking up a device for extra security for very rural adventures that often go beyond cell-coverage, mainly as an SOS for the worst case and as a tracker for my family's peace of mind. I feel comfortable and prepared (experience, tools, food, space blanket, first aid, etc) way out there, but stuff happens.

Is the this basic SPOT unit a good one? What else should I look for in a device/service?
https://www.rei.com/product/860469/s...-gps-messenger