down and side is an added bonus id say, because you can identify structure that is off to the side of your boat 50+ feet on both sides, drop a waypoint and fish is later. Cant go wrong with either brand. The competition with the imaging is pretty strong right now. Garmin, the New helix or onix is pretty sweet from hummingbird and lowrance units. I have a lowrance HDS 7 touch with structure scan. no complaints
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