Anyone have the Garmin GPSmap60c? My parents have decided to give me a GPS for my birthday (pretty nice gift, eh!) After some looking around, they suggested the Garmin would be a nice one, but they are not boaters, nor technologically inclined. I have an old GPS now, but would like to have chartplotting capability. In fact, I have a laptop with charts but the GPS is too old to talk to the computer. I figure a chartplotter gps would be nice to have so I won't have to lug the computer down to the boat.Comments on the GPSmap 60c please...Also, do I need to buy the charts with this or can I use my NDI charts?Any other GPS units I should look at?Thanks