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I have just a 4. I upgraded and really don't see much difference except the maps and the new features. Same speed and battery life as far as I can tell.
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Glen
49 Year member of the Porsche Club of America
1985 911 Carrera; 2017 Macan
1986 El Camino with Fuel Injected 350 Crate Engine
My Motto: I will never be too old to have a happy childhood!
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