Dingbat,
l did not not give a recommendation about which model was BEST because l do not know everything there is to be known about sounders and chartplotters,
we now know what type of fishing/boating/cruising ErvCam is looking at doing in the future.
( Because l asked that annoying ( apparently ) question )
this is good stuffs to know for other folk to base their recommendations on.
However, l am perplexed why the manufacturers give us the option of displaying 47 different color palettes,
but, such is life...
l am reasonably sure your saltwater setup will work in a freshwater pond, regardless of geographical location.
l do have another annoying question though,
why is the word chartplotter being removed from the english language?
Chartplotter sounds sooo much more nautical than GPS.