are good value...however you will need two: the US coast one and the Caribbean
one. Get the Gold and not the much more expensive Platinum ones. We have sailed 9,000 miles, the entire US East Coast
and the Caribbean
to Trinidad using those two chips for a total cost of about $350. We plan to cruise
the Western Caribbean using the Caribbean chip next year.
While the Navionics charts
are criticised for poor charts in the Bahamas
, and we did use Explore paper charts there, I think the anyone that trusts electronics
rather than their eyes in the Bahamas
is a little naive.