I went down to chivers today and saw the new HDS sounder combo. Unfortunatley the map is not yet compadible with the unit. Be-aware but as the salesman told me that the platinum card is the only chart to give you "Turbo view". I like the lowrance gps's but prefer furuno sounders. But this unit in demo mode is f#@$%&g fernomanal. It looks like Google earth when looking at the ocean.