Mapsend Topo 3D is a big improvement over its predecessor, Mapsend Topo. Topographic detail and points of interest are greatly expanded. Disappointingly, trail information is still largely nonexistent, although Topo 3D does come with an an offer for a trial subscrition to Trails.com. The improvements come at a price, as usual. A Topo 3D map of a given region uploaded to the GPS receiver is about 3X the size of the old Topo map for the same region. All things considered, the price is probably worth it.
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