my husband and I just buy a Pontoon Boat for fishing and pleasure . we both enjoy fishing so we want to get some good equipment to go along with the boat and this unit be highly recommend . it may even be more than we need right now because it be `` load '' with all kind of good thing . the graphic be easy to read and clear . the depth finder with alarm be very helpful . even when the sun be shine on the screen , it be clear and easy to read . the sonar give a real wide angle of what be below we and in great detail . this unit have more map than we will ever use , but it be good to know they be there should we decide to hit some other fishing area . we boat dealer be kind enough to instll this unit on the boat for we and the hookup they use move it in all different direction and allow we to remove it easily before trailer the boaot home and pop it on when we be ready to hit the water . I do not see how anyone could be disappoint with this unit . my husband , who be not a `` Techie '' -lrb- have problem run a computer -rrb- have learn very quickly how to operate this unit . we love it . we highly recommend it . when I have a couple of question , support from Humminbird be excellent too !