If you’re fitting out a new boat, or doing a major update on your existing one, take a look at Garmin’s new GPSMAP 8400 and 8600 series multifunction displays. With touchscreen control and read-in-any-light display, they have the highest screen resolution in any marine MFD, according to Garmin, and deliver the fastest map drawing ever due to a new high-performance processor. They also have full HD switching to provide accurate colors, as seen from all viewing angles. Garmin’s new MFDs come in 17-, 22- and 24-inch sizes, and start at $7,499.99. They can be networked via NMEA 2000 to…