In reply to Russell Lovett:
I long thought these devices looked to expensive for my use (a couple of times a year in either the Highlands or Scandinavia). However, the Freedom Plan on the InReach Mini swung it for me. So, now that I've forgotten about the initial large outlay (I did find it a bit cheaper with a discount), I only have to pay the £35 odd annual fee, and then about £15 for any month I use it in. You do need to remember to activate the plan though, and I'm not sure if its a month from reactivation day, or if its from the start of the month.
I've only used it once, on a 3 night solo canoeing trip. As I was camped away from mobile signal, I also found the text function useful (if cumbersome!), as well as the weather forecast. The latter has a Premium version (free on top plans, or £1) which proved quite useful as it included wind (critical to me as a paddler on big lochs). The basic free forecast did not include wind.
It was also nice, but not essential, to see my tracks on the Garmin software.
I didn't full test the messages and tracking, but the short test I did seemed fine.