No direct input, but I've been recently reading through some of the
articles on
http://www.marine-electronics-reviews.com/garmin-marine-gps.html
just to get a feel for the kind of things that are out there, in plain
language. Much of the other units, at the higher end of the lines, seem
mostly to differ in that they're much more tightly integrated into a
ship-wide network of instruments and radios, and the price for the
plotter is only a small fraction of what one needs to spend in order to
get the value out of having a GPSMAP XXXX (4-digit) instead of a GPSMAP
XXX (3-digit) unit. That is, there's very little point in spending for a
4-digit model unless you're designing a whole system for a new ship or a
complete rebuild.
--
I still want a phone with caller-IQ.
-- Tanuki in the monastery