I disliked Bing's extra "stuff". When I want to search on the internet, I don't want to have to load a webpage that has a lot of images to load, wants access to my facebook/twitter to see what my friends are searching, etc. Remember when Google tried to do something like what Bing does now? There was an outrage because people just want to be able to search without extra stuff clogging their bandwidth/screens. If you like the extra stuff, then Bing is probably what you want and you should definitely try it.
I also took Bing's challenge of Bing vs Google. In the blind side-by-side, I picked Google 4/5 times. The one that wasn't a Google win was a draw.