I bought a "Hunting GPS Maps" card for Nevada. Great maps at 1:24,000 scale and with private lands marked with owners' names and public lands identified by agency. But... it cost me $100. for that map. However to buy the USGS paper quadrants to cover Nevada would have cost probably three times as much with no private lands being well marked and no owners' names. So I guess it's not a bad buy considering I get free yearly updates. At least the topo aspects of the maps are far more detailed than my original Garmin "Topo USA" maps. I have the older Garmin Colorado 300 but it works just fine. I did have one go bad after 5 years but sent it in and paid $100. for a "refurbished" Colorado 300. I hope this one lasts longer.