I have a purchased copy of metroguide that I use for the maps on my unit but the problem I have with that is that it does not give turn by turn dirrections in nRoute. I just bought a laptop for that purpose. I am so angry with garmin charging money for every little thing for the mapsourse software. I mean, I bought the GPS, the Mapsourse, and the laptop. Now they want me to pay another $140 for city navigator just so that I can have turn by turn dirrections. Doesn't seem fair to me and if anyone does think its fair, you should be tortured within an inch of your life then given time to heal then tortured again, and repeat that prossess till you die of old age. LOL