The joystick and zoom buttons make it very easy to navigate the screen. And to enter data, get things done in a hurry. Same approach is used in the CP300. My Raymarine RL70, for contrast, is quite a clunky interface even with the larger screen. And I am not fond of the current Garmin interfaces, which seem much more driven by keeping cars from getting lost-although my latest is a GPSMAP 60CX, it is sure not intuitive to a sailor. You must get used to them, though, considering their sales.