Zanshin. Save your
money. I have a navtex onboard. It was great in
Europe, two
weather forecasts a day, but out here in the
Eastern Caribbean it is of no use whatsoever, unless you enjoy scrolling through dozens of uintelligable nav warnings related to the
Florida coastline. Wi-fi coverage is so good now throughout the islands I almost always get my
weather forecasts online. Put a wi-fi boster on your
shopping list if you haven't already. I have an 'Alfa 500' and it is excellent.