When I took the unit out of the box, I charged it and soon plugged it into the computer to update the maps. The updating went smooth but I found a slight problem when I went to use it the next time. The first time I used it, before I updated the maps, I went to the POI (point of interest) screen and found the largest casino in the state. I punched it in and headed that way but the map led to a smaller casino nearby. I assumed this was an error but when I updated the maps, the large, popular casino is now no longer listed on the POI screen. There are a number of POI’s that are wrong on the map, including restaurants showing up where there are vacant fields and certain places missing altogether. That makes this a little unreliable when using it to find places in strange towns.
The unit also gets confused when driving through a parking lot; when in the parking lot at a local mall, the map shows the vehicle driving through what looks like an empty field and doesn't understand where the streets are. Another slight problem is dropping a connection when driving between large buildings. While traveling through downtown Houston, the GPS unit lost touch occasionally and that made it tricky to know when and where to turn.
However, when it comes to following specific directions, it is almost perfect. Punch in the address, using either the zip code, town or specific address, and it has never let me down. The unit also displays in 3D and shows up close animated images of the roads to specify what lane(s) you need to be in to go where you are supposed to. This is invaluable because, when driving in strange locations, it lets you know when you need to change lanes to avoid unexpected splits in the highway.