Someone asked about BiciMapas. I have this data base loaded on my Garmin Montana 650t. It is far more detailed than the Garmin NT North America data base. I A B compared them one afternoon by alternately turning them on and off. I was amazed at the detail that disappeared when I turned off the BiciMapas. They have just issued an update that I will download as soon as I get to a PC with Garmin Mapsource and enough bandwidth to download this large file. No doubt that it is not perfect, none of these things are, but this one seems pretty good so far.