I recently bought these maps for my Dakota 20. Install instructions (I bought the download version), was fairly straightforward, not too bad. I am new with newer GPS software, much better than my old Garmin Etreks.
About the maps, they are very good! If you hunt much where private/public/parks/BLM is a concern, these maps are definately worth their weight in gold. Very accurate, I have tested where I know where the private/public lines are, spot on. That was my primary reason for buying this map, and it was what I was expecting.
Water sources, the other reason why I bought this map. It does not show Game and Fish trick tanks/water catchments from what I have seen so far, which was a disappointment. But it was great on springs, wells, some cattle tanks, etc. I was able to find a few springs that I was unaware of in areas I have hunted for years. A nice thing, because I knew where G & F tanks are, but apparently missed a few springs.
Overall very pleased with maps, no glitches, shading is not bad, detail is very good, but the big things for me of land status and to a lesser degree water sources were as advertised, very good tool.