Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Mapsource City Navigator

I needed a map update when I bought a used GPSr for use. The map installed easy, and was using within a reasonable amount of time. The version was 2009, and was the last version that would work on my unit. Wished the price was a little better, but since it is getting harder to find these, I thought I would get it. I have been using it for a while and the routing is great, and fairly accurate. A trip to the Bay Area from Sacramento calculated my time, and with no traffic was less than 5 minutes from the original estimate.