Two key points:
Elite 5 DSI: Output Power [kW] Max Peak-To-Peak 4,000 W / RMS 500 W
Sonar Max Depth 250 ft \ 76 m
Elite 4 DSI: Output Power [kW] Max 2800W PTP, 350W RMS W
Sonar Max Depth Max 200 ft \ 61 m
Also, BIG difference in screen size. If the money isn't the issue, the 5 is the way to go IMO.
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”The beauty of the Second Amendment is that it will not be needed until they try to take it.”
~Thomas Jefferson.........maybe
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