The best emergency positioning device is still the EPIRB, but it must be properly set up, positioned and maintained.
The best tracking device is currently the Delorm Inreach, but...
We have recently had the unit freeze up, requiring a factory reset. It also occurred once last year. This action requires a firmware update and internet, which is a MAJOR PITA if you are in the middle of nowhere.
The Inreach looks good. What service do you have? Looks like that survival would do but what's a tracking point and location pin? If thats every time you send a location, it would be brutally expensive.
And Spot is only one way communication.
Why can't a cell phone tracker of some kind work for just following friends?