Caution: Feature creep! I’m not a fan of the new Kayak interface. Kayak’s been good to me over the last year, and remains one of my favorite search engine for airfares, despite with the introduction of sexy newcomers like Yapta and Vayama. Besides, those both sound like a parasite you’d pick up in South America.
Sadly, it’s harder to prune down choices with the new interface—filter touting be damned--and harder still to tweak searches by more than a few days at a time, as you’d do when you’re more focused on where you want to go than when.
Kayak has superior sorting tools to Vayama, unless you consider Vayama’s map to be an essential part of the search process. I myself hope to have a good sense of where places are before I pull the trigger on tickets. However, the economy of the interface was a big selling point for me; now, it’s gone from being intuitive to a bit like using the dreadful OS 9 or iDrive on a BMW, both of which cause my brain to leap from my skull in terror. Combine that with the fact that Kayak seems to be missing a lot of the lowest fares of late, and it feels like the storm clouds are starting to gather. Better get a life vest--it's under the seat.