Have always liked the their menus and have found the charts to be very accurate in the US NE. Swings on a SnapIt arm on the binnacle guard and comes off to play or add waypoints. I like the internal battery and run off it during the day and recharge at night. I plan trips on the PC using MapSource and transfer waypoints and charts from the CD. I find little use for routes in a sailboat. Just because you've hit a waypoint doesn't mean you can follow a straight line to the next one!