Thank you for your reply re sygic. I have taken your advice and invested in this for the US and also for Western Europe. I don't know yet how the updates work, do you get info that there are updates available?
Am looking forward to my trip to the Southwest starting in 2 weeks' time. Hope that I will not get lost now with Sygic!
Also, how do you get Sygic onto several devices? I have three Streaks and would naturally like the maps on all three devices.
I received info that within a few weeks' time there will be an update to the Sygic app which will enable the app to be run on several devices, without having to pay for the app/maps for each device.