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Title: Not enough memory, slugish data upload
Review: As good as the GPS 5 is overall, I am very disapointed by its memory capacity and the slugishness of maps transfer. Basically, if you live in a major city like Washington, LA or NY, forget about it. I am from DC and in my case, the 18MB built-in memory can barely hold enough mapping data to cover the city inside the beltway area. You can of course unload and load new maps but that is a tedious and slow process. There is no way to just update the map set currently loaded in the unit. Everytime you want to add to or modify the map set, you have to start over and load it from scratch. As an example, for the DC area, it takes over 1 hour to load a decent map set. Uploading map data through a serial connection is way too slow. If only Garmin had added a memory card to this unit with a USB interface. This would have made it much more usable.....
