Been using this for 3 days now in Sao Paulo and it works well. GPS takes up to a minute to pick up a signal. I am using with a car kit and a case and it still work fine. I picked this one over others because it uses navteq maps and I heard they get updated more often and have less holes. I have not found any major errors in the maps. But it is a bit difficult to work out when you have a complicated junction what way to go. The alerts come in time, just needs to say the street names as well. One of my biggest gripes is that it is supposed to work with the built in contacts, and it has a non customizable icon for the contacts in the footer bar, but it does NOT recognize any of the addresses if it has a correct full ZIP code in the format of for example 01404-001. It works with some custom 5 digit zip codes that do not seem to be official use to me. Since most of my addresses are using a proper zip code that also works on google maps, navigon is not able to use these proper addresses. Please fix urgently! The other thing I have noticed is that some features from the European and US versions are not available here apparently: speed limit control and announcements, lane support on larger streets, realistic views in 3D and the mentioned address problems. Another thing I wish for is that I could zoom and pan around the 3D view while on a route, instead one can tap it once anywhere and the top down view appears. But it does not follow the route, not sure what this is for other than putting pins/destinations into place. Also would like a SIMPLER search, similar to Google Maps, where I can just enter a street, zip, city or keyword to give me a list of destinations. Also missing: details route step by step overview with the possibility to edit the route, add or remove streets I do or do not want to go through on my route.