One significantly better feature about Bing is that it doesn't have any "compare to x in another window" boxes checked by default. I switched from Kayak to Mobi

One significantly better feature about Bing is that it doesn't have any "compare to x in another window" boxes checked by default. I switched from Kayak to Mobissimo because of that (despite the fact that their name is so annoyingly hard to remember that I kept inadvertantly going back to Kayak) and unfortunately Mobissimo eventually checked some boxes by default too. So now I'll use Bing.