Many of you have more experience with the various g2 Bluechart SD cards and I am trying to figure out why in the world would anyone buy the g2 cards which are for specific geographical regions, such as the Chesapeake Bay or SouthEast Florida, when they can purchase the sd card " GARMIN BLUECHART G2 HXUS039R US G2 (ENTIRE US) " ?
If it covers the entire US and costs the same ( which it does ) why not just buy that card ?
Are the specific region cards more detailed or something ?
Thanks for any insight....