After the initial "Wow" of the Vive experience, I now find myself reaching for the Rift more often. It's less hassle to put on (no messing with earbuds), lighter, fits better, and is more comfortable.
The focus of the lenses is better on the Rift than the Vive leading to more of the image being sharp. This gives the impression of higher resolution and makes games like Elite and DCS much more playable.
The Rift is the better headset at the moment, no question in my mind, but the Vive is the more complete VR experience. I think that once the Rift gets its touch controllers, it will be the one to have.
I'm planning to sell my Vive or return it under the DSR in the next week or so. I think that speaks volumes.