Interesting. I have a question for the Garmin users... What is the difference between the various Garmin marine models (other than the price)? I'm trying to differentiate between them by shopping online, and even the comparator on Garmins own site doesn't point out any relevant differences between a 430s and a 535s (for example).
If someone could point out the reason for spending the extra few hundred bucks (or not), I'd be grateful.
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