I've had one aboard for about 3 years.
Chartplotter performance is excellent. I have the CPV 350 displaying all
NMEA data aboard the
boat (speed,
depth, wind) including
AIS. The built in class D
DSC VHF transceiver also works well. Since the
chartplotter and
VHF are combined in one unit, there was no interfacing required to get full
DSC functionallity. DSC alerts are displayed on the chartplotter.
Reliability has been flawless.
Software updates are easy to do too. Obviously, I am happy with mine.