I have...
A Garmin GPS 48; It was a Christmas gift in '98. I think they go for around $260 these days at West Marine. I love it- Comes with a database of marine lights built in (updates are on the 'net), it's water resistant (though I'm doing my best not to test this feature), it's easy to use, has decent battery life (24 hours on 4 AA's), can be plugged into an external antenna, and is handheld, so I don't have to leave it aboard when I'm not there. Plenty of accessories available for the Garmin units, too.--Jon BastienH23 '2 Sheets to the Wind'