I was surfing around and found an interesting article talking very evenly about Bing Vs. Google. You can find the article here: Bing, the Imitator, Often Goes Google One Better
The article is right down the middle, and the author has at least looked at the tool. There is an interesting quote:
Once you hit Enter, however, you can’t help noticing Bing’s more concerted effort to get you answers faster. To minimize the clicking, the hunting, the dead ends.
The article also mentions a great little site where you can run your comparison yourself. Take a look at the following site. The picture on this post shows the results from searching for Halo 3. Very cool stuff, take a look here to take your own tour: