I too, have the 188c. And Garmin is no longer servicing them. I only really need the screen replaced, but it worked well this past year. Like Bob, I would prefer to find a combo, if only for space on my console. If I get a new unit, it will have a larger screen, so will need the space the Garmin takes up. The Garmin GPS has been very good, but I am really interested in the new Navionics charts shown here
http://www.striped-bass.com/Stripert...s-mapping.html