I use Bing maps much more than Google maps, I like the interface for selecting where I go better in addition to thinking the routes are better.

The biggest thing in selecting points is that Bing maps remembers where I have gone to and from before while Google does that dumb "show me everywhere that has a 1234 house number then everywhere that has a Central Ave, then etc."

I also like the print functionality and how the print looks better and what it says better.

All that being said my Garmin is still better than either and way better than the maps app on my iPhone.