the main difference I see on google maps versus bing is that when you zoom into an area, the google map shows a lot more names of the local buildings and landmarks in addition to the street names, whereas bing maps usually just has a few buildings & landmarks.
However, I really love the hi-res aerial photos on bing maps and the ability to easily rotate it thru the 4 points of the compass.
I agree with a number of comments above the the PB browser should be able to display google maps since they are embedded in so many webpages.
