I'm still pretty new at this, having purchased this unit in December 09 at Best Buy. I did the map upgrade immediately. Overall I'm pleased so far but I'm having one problem and I apologize if it's been asked before. When I attempt to enter a city, street name and number, sometimes I cannot find the street name on the list. Often it works fine but other times, such as here in Tucson, I cannot find even major, decades old roads on the list. When I am driving, they show up on the map though. Any suggestions are appreciated.