I have been using Google Maps Navigation beta on my Google Nexus One and it has performed very well, especially for a free voice guided navigation client. One aspect of this solution is that you have to be connected to your wireless carrier network to use Google Maps Navigation. Nokia has a very good Ovi Maps client that works offline and online with advanced premium features such as traffic, weather, pedestrian walking mode, and voice-guided navigation. Prior to today's announcement these premium services were subscription services on most devices (some devices had lifetime licenses). Today, Nokia announced that ALL of the Ovi Maps premium services will now be FREE on Nokia smartphones. This announcement helps Nokia towards their goal of making GPS navigation as standard on smartphones as the quality cameras they have been providing on devices for years. This adds significant value to Nokia smartphones and fires another major torpedo into the sinking PND ship.