Bests & Worsts Reviews from Amazon

I got this software for use with my Garmin eTrex Summit, and found it to be less than adequate for my work. As a botanist in the northwoods, I cover a lot of territory each season. I need to be able to view accurate and complete topographic maps, plot my tracks and markers on these maps, and orient locations by legal description -- Township, Range, and Section line -- so that I know, for instance, when I'm crossing property lines, say from public to private land. Mapsource's topo maps have few contour lines and omit many dirt roads, small lakes, and many other details. Most importantly, Township, range and section lines are omitted. In it's favor, Mapsource is easy to use. And the price is good: The entire U.S. for $100. I later obtained MapTech's Terrain Navigator software, and it works much better for me. The details are almost as complete as USGS topo maps. Township, range and section lines are included, as are complete contour lines and even some abandoned, bermed roads (on public land). MapTech is not, however, as intuitive as Mapsource. And MapTech costs much more in relation to the area covered: I paid for one small part of our state. So if you want maps for the whole U.S. and don't necessarily need details, get Mapsource. If you want USGS-quality maps with excellent detail, look at others, including MapTech.