No matter what the brand you choose dont cheap out on the antenna. A cheap radio properly installed with a good antenna will out perform an expensive one poorly installed with a cheap antenna.
Cobra radios seem to work ok but I would put it on the bottom of the list of brands you posted. Since all radios now are dsc be sure to hook it up to your gps or get one of the new ones with an internal gps. Be sure you also register your radio so you can get your mmsi number. The reason for this is to enable you to use the Coast Guards rescue 21 system that will pinpoint your location in an emergency with the push of a button.No matter what the brand you choose dont cheap out on the antenna. A cheap radio properly installed with a good antenna will out perform an expensive one poorly installed with a cheap antenna.
S-H, good stuff...but ICOM, look into them...
The 412 will do you fine...