Thanks for sharing. One thing to note is buoyancy of the units and coverage. The former can be fixed but not the latter. I was on the SPOT and Garmin websites before and I know they use Globalstar. There is limited coverage where it works so check the coverage map. It isn’t sufficient for us if we are out in remote areas especially on liveaboards. At least with the PLB1 they mention, which has been mentioned here, you can use it anywhere, including the middle of the ocean or the Poles. That is the nature and benefit of using COSPAS-SARSAT.