Thinking seriously about springing for a Furuno 1870F. There's a rebate through the end of this month. I'm having trouble finding info on the Jeppesen C-Map cards, though. It looks like there is a full content and a local content card. I can get a full content delivered for approximately $300, or a local for about $190. Anyone know what is difference is between the 2 or if the full content justifies the extra $100 Two emails to Jeppesen haven't been answered for a week so I thought I'd ask here.