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I went from SAHH2005 to OCN5, the data is Navteq winter 2004/2005 and I am very satisfied with the accuracy. The data is updated yearly on typical softwares I suppose.
Delorme data is old, you can even see it in their current paper maps at the bookstore. They apply some updates, but in general they are working off a very old database.
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"I'm a perfectionist, but not very good at it yet."
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