Anyone using DSI?

[trueblue2]

Am thinking I would like to add a DSI to my boat to get a clearer image of whats on the bottom. Wondering if its worth it. I really like my existing sonar and Lowrance GPS and don't want to replace them. I prefer single function units rather than the multifunction units as I think you would spend more time manipulating them than reading them.

Anyway, anyone using a DSI and do you find it usefull?
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