I like the Navionics Platinum. 1' contours, and 3d with aerial if your graph is capable. Buy the premium if your graph won't do 3d. You still get 1' contours, and the tight contours help you locate ledges and drop offs better. My built in insight doesn't give ya 1' contours, but it shows some different stuff on certain lakes.
Big River Marine
Bill Burnett
870-635-0202
We sell XPRESS, EXCEL, and ALWELD Boats. Yamaha, Suzuki, Evinrude, Mud Buddy, and Tohatsu/Nissan Engines.
Pro Staff, Southern Pro Tackle and Ozark Rods.
Member, Tri-State Crappie Anglers
We only sell the Best. Ranger, Xpress, Yamaha, Suzuki, Tohatsu.