I had the high-end Raytheon and was not impressed. The transducer lost signal with no warning and there was nothing interfering. Just a loss of bottom.
Nice features, weak warranty and Boaters World in Bellevue wanted nothing to do with helping.
I think a Garmin combo unit would be my first choice.
Then Lowrance.
Good luck.
Lots of people on this board know more about the subject than I do.
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If you leave things up to interpretation, there's no room to be right.