Scotty has one in the CCC I am fishing in all the time at the moment. Might even be a 6600 if one exists. Pretty large screen. He won a 620 Furuno at a game comp but the Navman was hanging in better and showing the bait we were jigging slightly better than the 620 yesterday. Could be a bit to do with transducer position or something but it certainly held its own. The plotter functions are fine. Just let down by running C Map cards. Easy to use and does everything you need it to do.