Updated Navigation DVD

Has anyone out there updated there Naviagtion DVD yet? My 2002 TL has pretty bad coverage in Florida and am wondering if it is worth shelling out the 100 bucks for the new DVD. The dealer told me the new DVD is a lot better but wanted to make sure before spending the money. Thanks

yeah its worth it.. we got it... although i must warn you that it boots slower and becomes a bit laggy... like the whole comp needs to be upgraded, but thats just once in a while...