The Echopilot caught my eye because it acts differently than most other PLBs I've seen. This one is attached to AIS so in order for it to work for you, you must be set up with AIS (we have this on Rasmus, and it's for sure one of the best systems we installed). It works like this: instead of notifying the Coast Guard (which is on land and could take many, many hours to organize a search and rescue—days if you are in the middle of the ocean somewhere) or simply sounding an alarm on the boat, it triggers an AIS alert on your boat and any other AIS-equipped boat in the near vicinity and (thanks to GPS technology) gives the exact position of the person in the water, right there on the chart plotter. There are several advantages to a system like this, first of all - the boat that is most likely to rescue the person who has fallen overboard is the very one they fell off of (assuming there is another person on the boat to pilot it). Also, giving that boat the victim's exact position doesn't only greatly expedite rescue, but increases the odds of rescue tremendously (never underestimate the power of currents, wind and waves and their ability to make things disappear on the ocean!). The other advantage is that it will also notify all other boats equipped with AIS within a four-mile radius. There are several other types of personal recovery systems, but this technology is touted as the "wave of the future" in terms of the evolving sophistication personal location beacons. We shall see.