The baja is the most popular, but quite a few of us run the Lowrance Iway 500c and 600c, which are a solid car style GPS, large screen, color, etc, etc, with 20gb of mp3 storage for music. I feed the music into my rugged intercom. The Iway was discontinued after Lowrance got out of the auto GPS market, but there are a ton of them floating around ebay which can be had for less than $200 used.