I've had mine a few seasons, really only use it for one trip a year when I am out of range and completely off grid. It works well and I really like the function and compatibility with the phone.
I turn it on when back at camp and quickly know if I have a message waiting. All messages have gone thru and received. Also nice to get daily weather report.
I pay the 5 bucks a month to keep my account, current email address and phone number active, then get the service for the month during my trip.
Only comparison is the the spot and it sucked real bad.