I did a comparison of these two transducers on my 7610xsv. I'll leave it to you to determine which one is best. I will throw in a couple of comments though. Absolutely remarkable that two tranducers, mounted side by side, set on the same exact frequency can be used without interference. That may not impress you, but it does me. I generally run several units of different brands at the same time and interference management is a huge issue. With the price of the GT15 about half that of the Airmar, if I used Humminbird or Lowrance I would buy this transducer and graft a different connector on it. Maybe Garmin will make a short adapter cable with Humminbird or Lowrance connectors. I know if I worked there I would sure put in a word to the higher ups for it. Very rarely am I able to make what I call apples to apples, absolutely fair comparisons. I think this qualifies.
This is set 1.
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