I bought the Lowrance 522LMS df/chart plotter a couple months ago...a $650 unit on sale at Academy Sports for $369. I've owned the Eagle 480 and a Hummingbird 727 and had no problems with seeing structure, bait, and fish arches but it opened a brand new world stepping up to the new unit I have on my console now. I moved the 480 to the bow and gave the HB 727 to my son for the front of his boat. Now we're both happy!