Both of these unit are on sale at the moment. I have a 4.1m tinny, mainly fish estuary ie the pin/ pummicestone passage with occasional trips to peel/Harry's/mud. I currently use navionics on my iPhone.
Question is:
do I take the lower fishfinder for the gps, or continue to use my phone and buy the better (I'm assuming the hdi is better than the dsi) fish finder.
Cheers for for ur thoughts.