Hi, I'd like to buy a TomTom GO 620 and I'd like to ask some questions: 1) Is it possible to download the all wideworld maps in the device. Is there enough space? Can I put a 32GB micro SD or only a 16 GB micro SD? 2) All the world maps are free to download? 3) Can I download all the wideworld maps whe I use TomTom GO 620 for the first time? 4) I will have fre update for all the maps in the next time or only those of Europe maps? If it is impossible to make updates of all the maps in the next times maybe it is better to download only that map you need in that precise time. Thanks for clear my ideas.