I'm looking at the HDS 5 gen 2 units. The X 13 still has the Elite 4 on it, the DSI unit was on my Trident 15. If I was planning on fishing in zones less than 60' I would keep the DSI unit in a heartbeat. But when your zones are more than 80', you loose quite a bit of resolution, which makes making out the structure and fish ...well...less than ideal. I set up next to a lobster trap in about 80' feet of water, and you could barely follow the line down. Bait resolution is great....you can see each individual fish, not just a ball. My problem is user error, not enough research before picking the ideal unit for the zones I fish. I spent too much time on my last trip adjusting the depth zone, the scale is in 10' zones up to 200'.
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