I have Navigon - works ok - I have used it for about 4 months now but it is not the best GPS Nav program I have seen. It could not locate some valid addresses I selected in NY, PA, WA. CA and ON and BC Canada. It obvoiusly needs Can/US map updates. I expect this will happen eventually under the Garmin influence.
In my opinion the voice options in english suck and while the maker has tried to be polite, the extraneous verbage is annoying. For example: The scripted voice uses PLEASE when giving directions such as "at the next exit please exit right" being a pilot I prefer straightforward curt directions as used with ATC without unnecessary words. PLEASE has no place in such directions. Phrasolgy is important to convey clear and concise messages.
But overall the App is OK and I will continue to use it until TomTom comes out with an Android app. I have a TomTom GPS and Garmin GPS unit but having the GPS App on my phone gives that extra flexibility while on the road. I use a Garmin Aviation GPS while flying and I love it. It is the best I have.seen.
Navigation apps that rely on having internet connectivity just don't cut it for me.
Hope I was helpful
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