cr0ft
Living Legend
Google maps on cell phone > all dedicated GPS units. Free life-time updates, traffic monitoring, connected to yelp reviews, and so much more.
What I can google, nearby Italian food, read the yelp reviews, click on the map, and hit get directions on a dedicated GPS, maybe i'll consider using one.
And then suddenly you ride out into the sticks, lose all 3G coverage and your Google Maps with no integrated maps on the device goes away. Google Maps is great for when you're stationary and looking for stuff, but it can't beat a proper GPS app with good turn-by-turn instructions and maps that will work even in the deepest darkest wilderness.