I've got the Garmin 540s which has been replaced by the 541s. It's a good basic unit that has easy navigate through the pages and screens. I think they retail for @ $700-$750 with a transom mount transducer. I did just see a demo at the Grand Strand Boat Show on the Lowrance HD models with the structure scan and it was pretty amazing but it was a bit pricey. I think Lowrance, Northstar and another brand are all under one company.
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1975 V-20 w/1996 225 Johnson
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