Helloo all! Me and a friend will soon be in South America for 2.5 months on a bike tour through Bolivia, Peru, Ecuador and Colombia. We have ourselves a Garmin Oregon 450, and we are looking to purchase the Garmin City Navigator® South America NT A couple of questions: - Would you guys consider open source maps over the commercial Garmin City Navigator map? - Is the Garmin City Navigator® South America NT known to be a reliable/detailed map? I know that while riding we will be off-route in many areas, should we consider a detailed topo map instead of the Garmin City Navigator? - Odd, but Garmin does not provide any maps for Bolivia. Would our best bet be a download from OpenStreetMap.nl? Can we rely on OpenStreetMaps for navigating in Bolivia? - Does OpenStreetMaps provide the most up to date open source maps for South America? Any other mapping websites we should consider? Thank you for all suggestions!