I have used both SPOT and inReach. The inReach is superior in every regard - coverage, user-friendly interface, maps, etc. The inReach allows for two-way communications
- up to 160 characters - to any texting phone
address. The inReach has an adapter that you can plug
in to a 12V outlet instead of eating up batteries. But SPOT is much cheaper. If it's for fun, the inReach is way more fun. If it's for back-up safety
- since you can recieve texts, if your SSB
or satphone failed, you could actually get short weather
updates and advice through the inReach, which you couldn't do through the SPOT. There is another thread here on this topic.... I'll try to find it.