As a hack it might not be impressive, but I found it useful to see the presentation side by side. At the moment, I'd say Bing is definitely much cleaner and more pleasing. The speed seems about the same but it's hard to judge the results without lots of work. It's amusing, though, to see how closely Bing mimics Google especially in the first items of the header: web, images, video ... It would also be nice if I could just close one side or the other.